Negative Exponents Story - "If they are in the upstairs apartment, they must hate walking all the way up there. If they are in the downstairs apartment, their neighbor upstairs is noisy. Either way, they are unhappy where they live, so they must move apartments so they can be positive and happy again. Silly, but it seems semi-effective."
Backyard Bowling ~ Add a few drops of food coloring to ten clear plastic bottles of water. Stand them up on flat ground, use party streamers as lane margins... Break glowsticks in the bottles for lawn bowling at night... this is AWESOME!