Wanna shoot fireballs from your fists like Ryu in Street Fighter? These motion-activated gloves will do the job. You'll need an an Arduino Pro Mini, an Adafruit Accelerometer, and some butane. Allen Pan (previously at Neatorama) built these Punch Activated Arm Flamethrowers, inspired by Avatar: The Last Airbender and The Legend of Korra.
If you're ready to make your own, the instructions are at Hackster. The project is labeled "advanced," and if you don't know what you're doing, you could burn yourself. -via Sploid