The beginners got to do food color and celery changing color and loved it. We mixed homemade salt clay then made creations from them. The kids loved adding in the color and kneading the dough until it was ready to use. They were less sure about sharing their clay even to get a second color.
RECIPE [ 1cup flour, 1/2 cup salt, 1/2 cup water, 1 tsp oil, a little tempera powder]
We drew hot air balloons and colored them by layering on tissue paper and spraying it with rubbing alcohol. Turns out nice too.
I brought leaves from my Turks cap to paint on the veined side and do color stamping with. Once the kids got enough paint on it really took off as they could stamp repeatedly with one leaf. The erupting paint was much more fun to make as everyone got to stir some of it up and add colors to it. It only foams for a few seconds but those were good seconds. RECIPE [ 1/2 cup flour, 1/2 cup baking soda, 1/2 cup or so water, food coloring]
Our crystal painting got mixed without their help as it involved very hot water. RECIPE [1 cup HOT water, 1 cup+ epsom salts, food color or tempera paints]
We tried out hand at making our own crayon scratch-outs and did not get them dry before the end of camp but the kid learned how to do it: RECIPE [heavily applied crayon on paper, tempera paint with dish soap applied heavily and let dry]
we also did a magic milk experiment but thinned it a bit too much so we could not take prints RECIPE [milk, drops of food color, toothpick with dish soap on it] and lastly we made kaleidoscopes and straw airplanes that flew very well. Wish I'd cut the helicopters for the younger kids that we did in the older kids' camp.