I was at a wedding where the center piece was a beta fish. And under the napkin they hid a pic of a fish and if you got the fish you got to take it home. I thought this was differnt but I don't know how costly it would be. I was thinking of doing floating candles. They have them at walmart in the craft section and I was gonna put crystals at the bottom of the bowl in my colors. I figured it would cost me no more then $50. But I'm also having only about 100 people. Good luck