A little light for groom and bright
Buy an angular tea light holder out of glass and a fitting tea light, perhaps even with a nice fragrance. Out of wire you can build a great framework and fix a red paper heart to it with a cute wedding saying written across or just A little light for groom and bright. With a paper-clip you can attach the bill(s) folded to a square or rolled up.
Very creative and effective, but discreet!