You are unlikely to have the full set of these unit blocks at home but encourage block building with your kids. Read all about them on my projects to try site or the homegrownfriends site. Blocks are the best toys kids can have.
Pipe building - Exercise the small muscles of the hand and fingers in a new way. Teach the concepts of right and left, and the “right is tight, left is loose‟ rule. Allow the child to create free form pipe sculptures.