Easy non toxic finger painting fun for the kids.
Use primary paints, a jar each of non toxic acrylic yellow, blue and red. Make secondary colours by mixing equal amounts a teaspoon at a time, to make other colours. Place the new colours in little cupcake holders or similar. The kids will love creating their own colours. Set up a table with large sheets off a roll of parchment or other cheap paper, and let them start dipping their fingers in and start painting on it, their many treasures.