Pencil (Fallout 3)

Pencils are generic junk often found on and in desks.

While it is nearly worthless, it is worth noting that pencils have no weight, so it might be worth the extra cap to pick them up. Or they can be used for ammo for Rock-It Launcher other than using pre-war money.

You can find 4 pencils on the desk in your Megaton house with the Pre-War Theme.