Glow sticks in the pool, great for night swimming! Not sure this would be the best idea for a big in ground pool (would probably take a couple hundred sticks), but would definitely be cool in a kid pool or an above ground pool!
A complete guide on how to throw the ultimate summer pool party. Read for summer pool party essentials. Summer pool party ideas from poolside refreshments, summer treats, nautical napkins, white sangria and beach balls.