Their current use in the Fallout world is either as Rock-It Launcher ammunition or as decoration. It can also be used for the unmarked quest for Isaac in New Vegas. In the Honest Hearts add-on, it is the required component for crafting black coffee. Also, in the Old World Blues add-on, they can be given to Muggy in exchange for two pieces of scrap metal.
- 16 spread throughout Tenpenny Tower.
- Nine in the Citadel laboratory.
- Nine in the Evergreen Mills bazaar.