This inexpensive DIY sprinkler contraption will be the hit of the neighborhood and kids' summer parties. Easily made out of PVC pipes, the Deluxe Kid Wash lets kids run through cooling sprays of water.
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.
Another pinner says: glow in the dark slime UPDATE: made this and it was every bit as cool as I had hoped. Not sticky (was afraid it'd be sticky on the hands) and therefore not messy. and it glows! :) Regular slime recipe + glow in the dark paint
10 Awesome Fort Ideas To Build With Your Kids - Page 5 of 10 - Reach for the stars without leaving the house! This adorable starry night box fort is just one of 10 awesome ideas to try with your kids. (via Life As Mama)