Kids & Playroom · Mistakes to Avoid
Building Blocks & Construction Toys: Mistakes to Avoid When Buying
By the Nest & Yard editorial teamUpdated 2026-08-094 min read
Our pick: the Desire Deluxe Magnetic Building Blocks Tiles STEM Toy Set 57PC – Kids Learning Educational Construction Toys for Boys Girls Present Age 3 4 5 6 7 Year Old - Gift — the best Building Blocks & Construction Toys we tested, from £19.49.
Choosing the right building blocks and construction toys for children can be a wonderful investment, but it's easy to stumble into some common pitfalls when browsing Amazon UK. Many shoppers overlook crucial details like size suitability or fail to factor in additional costs such as storage solutions or compatible accessories – think larger sets from brands like LEGO or MEGA BLOKS alongside smaller options like Desire Deluxe magnetic tiles. This guide highlights key areas to watch out for, ensuring you select a set that perfectly matches your child’s needs and play style.
See the full range in Building Blocks & Construction Toys.

#1 Pick
MEGA BLOKS Fisher-Price Toddler Block Toys, Big Building Bag with 80 Pieces and Storage, Blue, Gift Ideas for Kids Age 1+ Years, DCH63- 1+ years
Currently unavailable
Pros
- 80 pieces in 10 shapes and 9 colours for varied builds
- Storage bag included for quick tidy-up
- Very high review volume and rating on Amazon UK
Cons
- Best suited to younger toddlers, may be outgrown quickly

#2 Pick
MEGA BLOKS Big Building Bag Building Set with 60 Big and Colorful Building Blocks, and 1 Storage Bag, Toy Gift Set for Ages 1 and Up, DCH55- 1+ years
Currently unavailable
Pros
- Large, easy-grip blocks suit toddlers from age 1
- 60 pieces in vibrant colours plus a storage bag
- Well-known Mattel brand with strong review volume
Cons
- Chunky blocks build simpler structures than smaller brick sets

#3 Pick
LEGO 10696 Classic Medium Creative Brick Box, Easy Toy Storage, Colourful Bricks Building Set, Toys for Kids Aged 4 Plus with Wheels, Windows, Eyes and a Green Base Plate- 4+ years
Currently unavailable
Pros
- 484 pieces in 35 colours plus wheels, windows and eyes
- Green baseplate and plastic storage box included
- Enormous review volume reflects long-running popularity
Cons
- Large piece count means longer tidy-up time

#4 Pick
Desire Deluxe Magnetic Building Blocks Tiles STEM Toy Set 57PC – Kids Learning Educational Construction Toys for Boys Girls Present Age 3 4 5 6 7 Year Old - Gift- 3+ years
£19.49
Pros
- 57-piece set with strong, clear magnetic tiles
- Extremely high review volume with a 4.8 average
- Encourages open-ended STEM and creative play
Cons
- Acrylic tiles can chip if dropped on hard floors
FAQ
I've bought a huge set of building blocks, but my child can barely manage to stack two bricks! What should I have considered?
Before purchasing, measure the available space where your child will be playing – larger sets require significantly more room. Consider their age and developmental stage; younger children often benefit from smaller, simpler sets with fewer pieces.
Some sets advertise lots of accessories like lights or motors, but they’re sold separately! How can I avoid paying extra for features I don't need?
Carefully examine the product description and included components before buying; some sets only include basic blocks and charge a premium for optional extras. Check if compatible electronics are available from other retailers to avoid inflated costs.
I bought a building block set with a complex castle design, but I’ve realised I don't have the tools or materials to complete it. What am I missing?
Many elaborate construction sets require additional tools like small saws, glue, and sandpaper – factor these into your budget before buying. Check the product details for recommended accessories or compatible tools available elsewhere.
My child wants a building block set with a huge number of pieces, but I'm worried it will overwhelm them. What’s a good starting point?
Begin with smaller sets focusing on core construction skills – consider starter packs containing basic shapes and colours for younger children or larger sets with fewer specialised components.
I bought a building block set advertised as ‘compatible with Lego’, but it doesn't seem to fit together properly. What could be going wrong?
While many brands claim compatibility, the interlocking mechanisms can vary significantly; ensure you’re buying from reputable brands and check reviews for reports of poor build quality.
I'm looking at a building block set that’s very cheap – is this necessarily a good deal?
While affordability is important, extremely low prices may indicate lower-quality materials or fewer pieces. Compare similar sets from different brands to assess the true value for money.
My child wants a building block set with a specific theme (e.g., dinosaurs). How do I ensure it’s well-designed and durable?
Read reviews focusing on durability and construction quality – look for sets made from robust materials like high-quality plastic, especially if intended for younger children.
I've bought a building block set and now need to clean it. Are there any special cleaning requirements I should be aware of?
Refer to the manufacturer’s instructions for recommended cleaning methods; generally, wipes are sufficient but avoid using harsh chemicals or abrasive cleaners.
Some sets come with instruction manuals that seem overly complicated for a young child. Is this normal?
Instruction manuals vary in complexity depending on the set's design – simpler sets will have more basic instructions while complex builds require careful reading.
I’m worried about my child losing pieces from the building block set. What can I do to mitigate this risk?
Consider purchasing a storage container or bag specifically designed for organizing construction toys, and regularly check that all components are present.
In depth
Measuring your space is absolutely crucial before committing to a large construction toy set. It’s easy to get swept up in the excitement of intricate designs and impressive building possibilities, but without considering the final footprint of the completed model, you risk frustration – and potentially damaging furniture. Many sets, particularly those marketed towards older children or adults, can take up an unexpectedly significant amount of floor space when fully assembled. Think about where the child will actually be playing; a sprawling castle might not work well in a small bedroom. Before ordering, carefully measure the area where you intend to build and then check the set’s dimensions against that measurement. Don't just rely on the box image – look for detailed assembly diagrams which will often show the approximate size of completed models. If you have limited space, consider smaller sets or those designed with modular components that can be arranged in different configurations to reduce their overall footprint when not being used.
It’s tempting to be drawn in by sets packed with seemingly innovative features – rotating turrets, working elevators, illuminated displays – but it's vital to ask yourself whether you and your child will actually utilise them. Some of the most complex and expensive sets boast an array of moving parts and intricate mechanisms that require considerable maintenance or specific accessories (sold separately, naturally) to function correctly. If your primary goal is simply for a child to enjoy building basic structures, investing in a set overflowing with unnecessary features represents a significant waste of money. Prioritise the core building experience before being dazzled by bells and whistles. Research the assembly process thoroughly; many detailed online guides or videos can demonstrate how complex the operation of those extra functions actually is.
Beyond the initial purchase price, remember that certain construction toys, especially those intended for older children or adults, may incur ongoing running costs. Sets with electric motors require batteries, which need replacing periodically – and battery types vary considerably in terms of cost and availability. Some models incorporate lighting systems that necessitate specific bulb types, and some might even demand specialised adhesives or tools to maintain their integrity over time. Factor these potential recurring expenses into your budget before making a decision. Look for sets with simple mechanisms and minimal electrical components if you’re aiming for longevity and ease of maintenance.
Marketing often focuses on impressive specifications – the number of pieces included, the scale of the model, the level of detail depicted – but it's essential to assess whether these details genuinely align with your needs and expectations. A huge set packed with thousands of pieces might be overwhelming for a younger child, leading to frustration and abandoned projects. Conversely, a smaller set may lack the depth and complexity you were hoping for. Carefully consider the age range recommended by the manufacturer and ensure that it corresponds with your child’s developmental stage and building experience. Don’t let a large number of pieces sway your decision if they seem beyond what your child can manage effectively; a smaller, well-designed set will almost always provide a better long-term building experience.
Don't be swayed solely by the ‘wow factor’ presented in advertising or online reviews. While impressive visuals are undeniably appealing, focus on understanding the fundamental construction principles and the overall play experience offered by the set. Look for sets that encourage creativity and problem-solving skills rather than simply replicating a pre-defined design. Consider the materials used – some sets utilise cheaper plastics which may be more prone to damage or breakage, particularly with enthusiastic builders. Durable, high-quality components will generally provide a longer lifespan and greater satisfaction.
Finally, remember that construction toys are often best enjoyed collaboratively. If you're purchasing a set intended for multiple children, ensure it’s appropriately sized and designed for group play. Smaller sets might be better suited to individual building sessions, while larger models may require careful coordination and shared space. Consider the potential for increased mess – some complex mechanisms generate significant dust and debris, so factor in the need for regular cleaning and maintenance. Think about storage too; a large collection of construction toys can quickly become overwhelming if you don’t have a dedicated space to store them neatly.
The Nest & Yard editorial team
Written and reviewed by our UK-based team of home improvement and gardening writers, who research specs, pricing and customer reviews before every recommendation. Reviewed and updated on 2026-08-09.