An Empty Tuna Can is a resource in RUST that is a byproduct of eating the contents of a Can of Tuna. It is spawnable via the F1 console. No purchase necessary.
While commonly considered garbage and often discarded, empty cans of tuna can be placed into any cooking or smelting implement in the game for a small amount of Metal Fragments. Players can also recycle them faster for the same outcome. They are also exclusively used in creating Tuna Can Lamps, which make for good early-game lighting and decoration accents.