If you are looking for a fun activity to do with your kids that has some lasting power, try making playdough with them. There are several recipes out there, but this is one I have used successfully.
2 cups flour
1 cup salt
2 packages of Kool-Aid (small, unsweetened) (This is the source of your color, so choose wisely)
1 T. plus 1 1/2 teas. cream of tartar
Mix these 4 ingredients together.
2 cups boiling water
1 T. plus 1 1/2 teas. vegetable oil
Stir, then knead when thick.
Just like any other playdough that you have used before, it can be rolled out, cut in to shapes, and molded in to figures.