my sister getting crazy with the play-do over christmas break.
Max ended up burying mounds of animals into a giant blob of play-do. That was a fun idea too. He had just as much fun pulling the play-do apart looking for the animals. You could do it with a sibling or a friend and each have a wad and bury little trinkets and let the other one "dig" them out -- like they were archeologists or something.
I love stretching what I already have.