I’m trying something new. As a GM, I like it when players come up with small contributions to the game. Players like bennies. So I’ve designed and printed out a handful of 3×5 index cards that players can fill out to get bennies. Each one has a template for a new NPC, location, monster or mystery. When a player needs a benny or wants to stockpile one, they can grab a card and add a bit of content to the game that I can make use of immediately or later. When the cards that I put out at the beginning of the session are all gone, so are the free bennies.
I may tweak these as the thrown-together or stolen and mangled templates prove insufficient (in fact I am hoping for some feedback), but for now you can download a PDF of them here.