A water balloon with a glow stick on the inside, in a stocking, hung from trees, patio cover, or the ceiling. Same pin elsewhere said: "Put a glow ball in a white stocking and hang many from trees or the ceiling." But what are glow balls?
If I had a pool I would totally try this out. Put a glow stick in a balloon for pool lanterns. Pool party on a Summer night! I think this could work pinned up on the fence of a backyard without a pool, too, so really great idea for any outdoor BBQ/party!
For the back patio. An outdoor Solar powered light chain like the IKEA Solvinden can transform your dark balcony to an atmospheric haven in the evenings. No need for electrical leads, nature takes care of it all.
Flash Freeze - Place beverages in a bucket; add a layer of ice, a layer of salt; repeat until you almost reach the top. Fill the bucket with cold water just below the ice line. Enjoy frosty beverages in about 10 minutes!
Drink Umbrella Wreath - Here is a great fun idea for a summer wreath for your front door. Get a Styrofoam wreath and stick a ton of fun drink umbrellas in them. This would be so great to put out while hosting a luau or summer swim party.