Waffle blocks like this Michley waffle blocks set, are popular building toys. They are flat and have mathing pegs on their sides. You can assemble these pieces in 2D and 3D shapes, and in different positions.
Pieces of this set have unusually big number of pegs on them – far more than pieces of Gakken and Plus Plus. The pieces have wall patterns, windows and other similar decorations. The basic models the set offers are houses and castles. However, you can build anything else from these interlocking squares and triangles. These triangular pieces are in fact less common in waffle block sets. Gakken sets, for example, severely lack them. On the other hand, this set doesn’t have arches and other similar pieces, which somewhat limits the building possibilities. The houses are the things Michley waffle blocks make best, and, sadly, there are no options for, say, cars with the moving wheels.
This particular set has pieces that are 2 inch wide, so they are safe for small children to play with. These pieces are easy to hold and too big to swallow, so the manufacturer recommends them for kids who are 3 years or older. The pieces also have safe, rounded edges.