Action art! is where it is at. Easy to do and a fun way to spend a rainy day. We also use art to create cards. In preparation for Teacher Appreciation week, we used cars and some balls to roll around in colored paint. Place the paint on flat plates. Put blue painters tape down randomly over the cardstock for design and to also hold down the blank paper while painting. The toys left interesting designs on the cardstock, which we later cut and folded into a card shape. When the tape is removed it leaves a nice clean blank space for writing or stamping (Thank you! in this example)
The toys are easy to wash when done (use washable nontoxic paint) and so is the kiddo, maybe. Enjoy!