Cute for sleepover game or b-day party :) Gummy worms hidden in a plate of cool whip and they had 30 seconds to get them all out without using their hands- messy but fun! I once did this at a halloween party at school and had a ton of fun!
Make a backyard bowling alley. Add food coloring to clear plastic bottles of water. Use party streamers as lane margins. Add glow sticks for night bowling. (These would make great outdoor table nightlights also with the glowsticks, gonna try it!