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.
Glue a wrapped piece of chocolate to the center for a "sweet" treat. These accordion paper flowers are so easy to make that even a child can do it - pick bright, bold origami patterns to make them really stand out!