Here are a couple of wearable flamethrowers that you can wear and activate as you throw a punch. You are going to need a motion sensor, such as an Adafruit LIS3DH Triple-axis accelerometer and a SparkFun Arduino Pro Mini to get started.
More items like this: here
You are going to have to do a bit of coding to pull this off. The good news is Allen Pan has made it available on Hackster.io.
*Disclaimer*Our articles may contain affiliate links. As an Amazon Associate we earn from qualifying purchases. Please read our disclaimer on how we fund this site.