Grimm’s Mosaic Rainbow 36 pieces

The set holds 36 cube shaped wooden blocks in a square wooden frame. The frame measures 26 cm and each block is 4 by 4 cm. The blocks are finished in bright rainbow colours, and the plain cubic form makes them simple for young children to stack, line up and arrange into patterns.

The elemental cube shape suits simple structures such as walls, foundations, fences, stalls, houses, towers and castles. Children also build small tables and stools for pretend play, or lay the blocks flat to make mandala patterns. Since the form is so basic, what gets made is guided by the child's own ideas.

Grimm's recommends the set for children aged 1 year and over, so it can be introduced to younger toddlers. Beginners enjoy stacking and toppling towers, while older children plan more detailed buildings and colour patterns. This range means the same box of blocks stays engaging across several stages of childhood.

They are made from lime wood and finished with a non-toxic water based colour stain and a non-toxic plant based oil finish. Because Grimm's uses natural timber, the grain and colour vary between blocks. These small differences are a normal feature of real wood rather than defects in the set.

Stacking and balancing the cubes develops fine motor skills and spatial thinking as children work out how pieces fit and stay standing. Sorting the rainbow colours and creating mandala patterns introduces early maths and design, and the open ended format leaves room for plenty of imaginative, self directed play.

Yes. The rainbow cubes can be used alone or alongside other Grimm's blocks for stacking, building, pattern making and imaginary play, so they slot easily into an existing collection. For more coordinating sets, browse our /collections/grimms-building-rainbow-worlds range.