Blockaroo Magnetic Foam Builders - Castle

The Castle set is suitable from 18 months and up, though the experience changes a lot as children grow. Toddlers enjoy connecting, stacking, and feeling the foam. Children from around 3 years start building intentionally — towers, enclosures, imagined castles. Older children create more complex structures and weave narrative play around their builds. The open-ended format means the set stays interesting long after other toys have been outgrown.

Anything. The castle is just one idea in the included idea book — the 35 pieces lend themselves to rockets, robots, houses, imaginary creatures, or whatever your child comes up with. The variety of shapes (cylinders, domes, cones, triangles, elbows, cubes) means the same set looks completely different from one play session to the next.

Yes. The blocks are made from soft, non-toxic EVA foam with no sharp edges — safe even for toddlers who still mouth toys. The internal magnets are fully encased in foam and are not accessible to little hands. Blockaroo blocks are safety tested to exceed international toy standards.

Absolutely. The foam blocks float in water and cling to the metal liner inside most standard bathtubs, so children can build on the side of the tub or float pieces across the water. The blocks are fully waterproof and mold-free — leaving them in the bath causes no damage. Bath time becomes building time.

Pop them in the top rack of the dishwasher. They come out clean and completely undamaged by the wash cycle. For a quick rinse, they can also be washed under the tap — there's nothing inside the foam that's harmed by water.

Yes — every Blockaroo set is 100% compatible with every other. The Castle set works seamlessly with the 10-piece Robot, Airplane, and Submarine sets, and with the larger 50-piece and 100-piece sets. Mixing sets together unlocks bigger builds and more variety in shapes and colours.

Quite a lot, quietly. Block play is one of the most researched activities in early childhood development — it builds spatial reasoning, shape recognition, fine motor control, and the early mathematical thinking that comes from figuring out how pieces relate to each other. Beyond the cognitive side, building independently builds confidence: completing a structure, deciding it's done, and showing it to someone is a small but genuine achievement. The open-ended format also means there's no wrong answer, which takes pressure off the play entirely.