I needed to keep M busy yesterday while I was cleaning the kitchen, so I remembered this little activity and pulled it together quickly for her. (Don't laugh at my cars, I was in a hurry and just started cutting freehand!)
Theme: Sensory/Messy Play
Materials: Craft foam cut into car shapes, washable markers, container of water, small sponge, towel to clean up afterwards!
How to: Have your child color the foam with marker (I did this myself since I was in a hurry) and then wash all the "dirt" off in the water with the sponge. You can add suds if that will make it more appealing to your child, but M has a strange fascination with drinking soapy water so I didn't bother.