Just because we can, doesn't mean we will, so don't be scared!! Tasteful is the name of the game.
Let's start off with something that I am sure we'll actually use:
Doily cones! For throwing birdseed or whatever after the happy couple is married. Of course, if you use birdseed, they would probably need to be lined; so I guess what we do with them will depend on what we decide to put in them. I'm actually not a big fan of the birdseed/bubble thing, but at the same time I always wonder where it is if I'm at a wedding that doesn't have it. I guess that means we'll be doing it. (And honestly, it doesn't matter to me, but we may as well. I guess, what it'll come down to is budget. If we have room in the budget, then we'll have them. If not, no big deal.)