A pre-War poster of Ruzka the Wonder Bear is the center target of Kenny's shooting range.
If you reverse pickpocket a different weapon onto Kenny, he will use the new weapon for target practice just as he would his BB gun.
Kenny will continue firing even if you get between him and his targets, causing damage.
The items on the shelf directly next to the dresser, including some abraxo cleaner, cannot be picked up.
There are skeletons in the dumpster to the left of the ramp leading to Kenny's place.
If you store any food items in containers within Kenny's Cave, he will most likely take them and place them into his inventory until you leave the cave. After entering again, the food item will no longer be in his inventory.
When you enter the cave, you can sometimes hear Kenny making rough, scratchy noises or booing to scare away "outsiders".