Watermelon Freezer Pops
cut a noodle and tie a rope through it, around a Rubbermaid bin.
This would go over VERY well with all the kids in our area - Take a 2 liter soda bottle, and poke holes in it. Hook your hose up to it, toss over a tree branch and turn on the water!
Add this item to your beach bag, baby powder gets sand off really easily.