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.
Celebrate the grad! Make clear balloons more festive (and less boring) with confetti! Sprinkle small amounts of tissue-paper confetti through the mouth of the thing, then blow it up and shake to dispense it around.