I was amused by the idea of RPG achievement stickers for generic fantasy games, like this . They're like bragging rights achievements on Steam for players - or collectibles for those of us who like to be completist!
Here are the stickers from Bearowl Studios:
You can stick them where you like. I'd probably put them onto my generic folder of beautifully preserved character sheets but there is also a tracking sheet, which is a neat idea.
As cool as they are, they don't quite fit with Icar, so I was wondering what sort of stickers I'd create. What about for your game?