We did one for our Eparty (in addition to favors).
Ours was in december, so we did lots of Christmas themed candy (candy canes, etc) and I went to dollar tree and got Christmas containers. The Dj made an announcement when dessert was being served that we wanted to share it with the guests, so they knew it was from us.
I don't remember how much of each candy we got, but we had about 10 or 12 different kinds. People are still talking about it!
We're not having it for the wedding because we have the VH and I think that would be too much!