|Effects||-10 Radiation, +5 HP|
 Fungus Deal
- Main Article: Fungus Deal
Cave Fungus can be gained by first traveling to Little Lamplight. You must speak with either Eclair or Lucy and tell them you wish to trade them for Cave Fungus. They will tell you that you need the approval of Mayor MacCready. After talking to MacCready and gaining his approval, you can now trade for Cave Fungus.