Isotta

My 4-year-old figured out how the nine big pieces snap together on his own, which never happens with his other sets. Watching him build something he can actually see through keeps him busy way longer than I expected.

The see-through body is the best part, my kids keep flipping it over to watch the little gears turn inside. Only nine big pieces, so we had it built in about ten minutes and they were playing right after.

My 4-year-old figured out the transparent body lets him see how the wheels connect, and he's been rolling it around the kitchen for an hour. The nine big pieces were already put together, so there was zero frustration getting started.