This might be a terrible idea or a wonderful idea. I'm not really sure which. I guess it depends on whom you game with. Basically you take all of the things you want to encourage in a LARP and then you create icons that you print out on sticker sheets. Someone meets the criteria, they get a sticker (and maybe a cookie). Why? Well you can't offer cash prizes and experience point incentives don't work for every player and when they do work they tend to create big power level gaps.
There could be stickers for reaching your tenth, twentieth and fiftieth boon owed to you or owed by you; stickers for your first feeding mishap; stickers for consistent costuming; stickers for submitting your thirtieth downtime; and stickers for helping out a certain amount of time.
So what do you think of that idea? Absolutely awful? Or just crazy enough that it might work?