Your kids will love these homemade tin can drums! They can be made from recycled materials and things you already have at home. Why not make a few drums using various sized containers and listen to the different sounds they make. Or put some music on and get your kids to drum along to the rhythm and sing along to the songs.
OK a bit messy, but lots of fun! Make your own edible finger paint for your 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.