While technically a Food item (restoring 1 Health each), Light Bulbs are mainly used for other purposes. They can be used to craft the Lantern or as fuel for Miner Hats and Lanterns (extending durability by ~19.2% or 1.5 minutes per Light Bulb).
Light Bulbs can be placed on the ground to be used as a Light source and will prevent an attack from Charlie.
Since Light Flowers regrow every 3 days, Light Bulbs are fully renewable, meaning an unlimited supply of fuel for Lanterns and Miner Hats.
Attention: The following categories are only for the players look up the page based on their first impression, they have nothing to do with the actual categories/behavior/function/tags of these items