In sets of 46 or 92 blocks, kids can build organically shaped structures using our Interlocking Blocks. Handmade by the villagers of Camphill Village, they have protruding dowels on top. The dowels fit into holes in the bottoms of the blocks. This allows children to build curved walls that will hold together rather than falling down with a toddler's sometimes clumsy touch. This set is an all-time favorite!