Share something you did with your kids that could be edible and fun. I have a 20 month old so I try to find activities that if she tried to taste it, it would be safe.
Here is a recipe for homemade fingerpaint.
2 cups white flour
2 cups cold water
Put water into a large bowl. Slowly add the flour, while the children are stirring. Once it's all mixed together, divide into smaller bowls and add food coloring.