I’ve made my own playdough before and it is a really easy project. But finger paint seemed so much more difficult! I don’t know why. If you have the patience to stand over a stove for 15-20 minutes stirring, then you can make the stuff. It’s just about time and having corn starch in the cupboard. Sheesh.
Three recipes can be found here. I used the first one, which was basically: combine 1/2 cup cornstarch, 2 cups water, 1/2 tsp salt and 2 tbsp sugar in a pan and stir over medium-low heat for about 15-20 minutes, until it becomes a thick, almost gelatinous substance. Let it cool completely, then divide into jars and add food coloring. We made three colors using 15 drops of yellow, 15 of red, and 10 of blue.
Then we took it outside along with a bunch of brushes and a big piece of cardboard (white on one side!) and tried it out. It was a huge hit! Bonus: it washes right off and seems to clean easily from clothing, too.