Rubbing cards. So much fun and so so so easy!!! I took a piece of heavy white cardboard and cut it into small pieces. Then, I used my hot glue gun to make shapes on the boards. After it completely dried I got a piece of blank white copy paper, laid it over one of the boards, and gave Addi a crayon. I showed her how to gently rub back and forth and she thought it was amazing how SHE colored a square!