Wait, so the favors don't have to be something they take home? (I told the fiancee these kind of details are up to her because I know little to nothing about them, but if I can come up with something, I will.) I much rather spend money on something like a candy buffet or ice cream machines than on stuff that has a good chance of being thrown away. As Die4cy said, something unique from what people get these days. I like the sound of that.
Traditionally, the are. So the candy buffet would be set up with little doggie bags to put in candies that you like. But it's your wedding. I for one, would take ice cream cones over m&ms.........