For this project, I had to use water as my medium or inspiration. I found an awesome project on Pinterest that I decided to copy. May I present: The Water Blob.
The girls had an absolute blast splashing around on the Water Blob. It seemed to be a mixture of waterbed/slip&slide. Laying down on the Blog was pretty weird---- cool, soft, and comfy though. Here's a video of the kids splashing around:
They loved their bellyflop competition and enjoyed playing ring-around-the-rosie. I joined in for a couple of rounds, and falling down onto a giant water bed sure beats throwing yourself down on the grass.
I bought a 9'x12' piece of 2 mil plastic from Home Depot for about four dollars. I folded it in half, and taped the three edges together leaving about a three inch gap to insert a hose. After placing it on some cushy blankets to keep random sticks from popping it, we filled it with water and taped the little gap shut.
We sprayed the top with water and blew bubbles everywhere, which made the surface satisfyingly slippery.
One small word of caution---- if you attempt this project, be sure to do this on a flat surface. I didn't even notice the gradual slope of the yard when I first began assembling The Blob. Big mistake. Once we starting filling it up it slowly began to roll. Down the hill. Thankfully Mrs. Joy held it in place while I scrambled to find some more blankets to level out the ground, effectively solving our problem. It didn't look pretty, but it worked well.
We love The Blob!!!