Shishkebab (Fallout 3)

Shishkebab is a "flaming sword" that can be made from a motorcycle gas tank, a motorcycle handbrake, a lawnmower blade, and a pilot light (found in most ovens). It can be constructed with the use of proper schematics.

The Shiskebab instantly sets enemies on fire upon contact, dealing 2 damage a second for 5 seconds. Its schematics can be obtained from Vance at the end of the "blood ties" questline, or purchased from Lucky Harith.

As with all fire and energy weapons, it can set off gas leaks. However, with the Shishkebab this can be caused by simply having it equipped and drawn.

This look a lot like a crude version of Nero's Red Queen sword from Devil May Cry 4, down to being a flaming sword with a motorcycle handbrake.