I collect Box Tops for my school and Diet Coke lids for my cousin.
MANY companies sponsor Box Tops for Education. Every Box Top turned in is $0.10 that our school gets. We raised $1300 this year from Box Tops.
My cousin collects Diet Coke lids. There is a code inside that he can input on a website and gain points. I know you can use those points to buy pretty cool things: ipods, cruises, etc. So I collect them for him and either mail them to him or he just gets a LOT from all the family members at once when we gather for Thanksgiving, Christmas, 4th of July, etc.
Any small marketing tools you collect?