A tried and tested classic! Painting with potato stamps is lots of fun and cheap and easy to do at home. Toddlers and preschoolers will love getting their hands messy and creating some great pieces of art.
OK a bit messy, but lots of fun! Make your own edible finger paint for the kids. Its cheap to make and safe to use and if theres any left over, store it in the fridge or freezer to use for another day.