Mum's opinion - Definitely more fun to make than to clean up.
Daughter's opinion - There are no boring bits. It's all fun!
3 tbs. sugar
1/2 cup cornflour
2 cups cold water
Mix sugar and cornflour in pan. Add water; stir.Cook over medium heat, stirring constantly. Mixture will boil, then thicken. Cook about 5 mins. Remove from heat; cool.
Separate into 4-5 cups. Add food coloring a drop at a time. Add a drop of dish detergent in each cup to make clean-up a breeze.
Paint on paper, cardboard or posterboard.