There is an abundance of jellybeans out there and it's all on clearance in after-Easter sales. Take advantage and snag you a few bags for cheap (I found mine in the bulk section of a grocery store for .25 a pound!) to make these cute favors for your next party....jellybean 'soda' cups!
Check your local restaurant supply store (I go to Cash & Carry) for the cups and lids, add your favorite jellybeans (if you are feeling a little crazy, make them all one color), top off with mini marshmallow 'foam' and a licorice 'straw'.
Oh yes, they will be the boys' birthday favors and may even pop up at a few other events...especially since I had to buy the cups and lids in a 50 pack. But they were ridiculously cheap, and the candy will keep. I saw this idea in a Donna Hay magazine a few years ago, and finally got my hands on the cups and lids.