Jello in a vase and drop flowers in it. Use half the water that jello recipe calls for for more vibrant color. you could use lots of different colors, use lots of stuff to toss in there and use them as centerpieces for any party!
Hug-Proof Blooms A boutonniere can stand only so many hugs. All that love -- plus heat and lack of water -- can leave flowers wilted. I can make two boutonnieres for the groom -- one for the ceremony and one for pictures.
Chebeague, Maine Nautical Wedding from Liz Banfield