The bride and groom requested that their guests respond to the invitations with a piece of fabric- any fabric- and was incorporated into a quilt for the newlyweds to have for the rest of their lives. Super cute!
This is a cheap but good wedding favour. To be honest though, I wouldn't include the wedding information but would have something simple like "love" printed on the glass in the wedding colours. This means the candle will be more likely to be used as it is much more universal piece.