Hi there.
I really like the jelly bean idea!! I just wanted to tell you that recently we did a baby shower for my cousin and she didn't want balloons either...well we owund up doing some, but not on the tables. Anyway, her theme was a jungle theme and we got these metal pots...they were white with like a hit of orange and green on them...we filled them with "jungle like" flowers and then bought tiny jungle animals to put in the middle. SO CUTE. We used just brown, orange, yellow, and green. We got EVERYTHING except the little animals at the dollar store. The flowers were great, especially when after that we went to AC Moore and the same flowers were like $5 or more A PIECE!!!
The jelly bean thing is a great idea though, or you could do a glass jar with different candy at each table with little baggies to fill. Definitely go to the dollar store (we went to Dollar Tree...they are usually the best) for the flowers. You could also check out Oriental Trading Company...they may even have some stuff for communion.