Light up your stride! Mod a pair of high-tops with NeoPixel strip and FLORA, Adafruit’s wearable electronics platform. These sneakers use a velostat step sensor in the heel to trigger firey animations as you walk!
via Overview | Firewalker LED Sneakers | Adafruit Learning System.
This looks like a fun little project from Adafruit. Checkout the video for the 2 minute rundown.