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.
Water bottle wall----this is becoming more popular; as a sidenote, at the new Kroger MarketPlace in Cedar Bluff they have hanging art fixtures made with water bottles--look for them in the drink aisles-JL
I've got tons of milk jugs! I imagine you could use this idea and add a strap type of handle. Reusable gift bag if you did that. Change up what you cover it with for the purpose, Christmas fabric, Valentines Fabrics, etc.