Rest In Peace Stamps
Our stamp style: "R.I.P." was originally designed to commemorate character deaths in 0-Level Dungeon Crawl Classics "Funnel" games. Players get a stamp to not only indicate a character has died, but also an epitaph so that they will be remembered for how they lived (and what stopped them from living!) This makes a fun souvenir for players at cons, and a unique keepsake for new and experienced DCC players alike.
In less lethal campaigns, this could be used to mark the defeat of a major opponent, or the death of a major ally NPC.