Ice painting is a fun way to cool off during the hot summer months. This website even has a substitution for children under the age of two who will want to put the ice paint in their mouths: kool-aid ice.
Time for Play: Smashing Balls (baked cotton balls) - All you need is some flour, water, food coloring and cotton balls! Bake them in the oven. When cool give your kiddo a hammer and watch the FUN! If only I didn't hate touching cotton balls.