Beautiful, open-ended blocks for curious minds and calming, creative play.
Encourage imagination, concentration and connection with our Rainbow Building Block sets — perfect for stacking, sensory exploration and role play. With their smooth texture and soft bevelled edges, these versatile blocks are a staple for any Montessori, Waldorf or open-ended play space.
Whether your child is building towers, creating characters or watching light bounce through coloured blocks, these blocks bring play to life in gentle, engaging ways.
✨ How can I use these blocks?
Use during light play and enjoy how the blocks reflect soft colours across the floor
Build towers to explore balance, coordination and problem solving
Incorporate into sensory trays or imaginative play as counters, pretend characters or small-world props
Learn through play: colours, shapes, gravity, shadows and textures
Take them on the go for screen-free, calming activities that offer repeated engagement
💛 Why parents & educators love them:
Great for light table play, sensory trays or quiet corners
Encourages focus and calm, supporting early emotional regulation
Helps develop fine motor skills, problem solving and creativity
Promotes open-ended play that grows with the child
Adaptable for loose parts play, counting, colour sorting or storytelling
Easy to clean, easy to pack, built to last
These blocks also offer indirect emotional benefits — from quiet solo play that helps little ones regulate, to shared play that builds connection and confidence.
📏 Product Details
Choose between a set of 10 or 20 Rainbow Acrylic Rectangle Blocks
Each block measures 5cm x 5cm x 2.5cm
Comes in a cotton drawstring pouch for easy storage or on-the-go play
Designed to pair perfectly with our Wooden Window Houses or mix and match with our Rainbow Cube Building Block sets (sold separately)
📦 Materials & Care
Made from high-quality shatterproof acrylic
Smooth, tactile and safe for small hands
Wipe clean with a damp cloth or warm soapy water
Please note: acrylic may develop small scratches over time with regular use
🔒 Safety Info
UKCA certified meaning it is safe for little hands and made of non-toxic materials, meeting all UK Toy Safety standards
Suitable for children aged 3 years+ due to small parts
Adult supervision recommended during play
📮 Shipping
Shipped via 48 hour tracked delivery as standard or upgrade at checkout to 24 hour tracked delivery. For both options we aim to dispatch your item within 1-2 days of receipt.
💛 Why choose Infinite Wonder?
We’re a UK-based, mum-founded brand creating beautiful, open-ended toys that invite connection, curiosity and calm — with a growing focus on emotional learning through play.
