Wedding Reception Favor Ideas?

I am a little stuck right now. I am trying to come up with more ideas for favors at a wedding reception. We need to come up with cheap ideas for favors that will supply 120 guests. We are not made of money, and we are looking for any ideas that will help save lots of money! We have ordered personalized stickers for Hershey Kisses, but we want something a little more practical if we can make it cheap. My ideas were labels for bubbles, and personalized math books or mint books. But, we are not agreeing on those in particular, so I am looking for some ideas from others. I wouldn't mind making things myself either. We are just stumped. Best idea gets the points!