Your old sneakers look boring, then grab a bunch of LEDs, Arduino and make them shiny. In this project each sneaker is surrounded by single color LEDs that are controlled by Arduino.
LEDs can can go through 6 different patterns that are selected by activating reed sensor with magnet. Really simple and effective solution. There is one more thing – probably you will have to learn walking with these as LEDs are popping out to sides and it is quite easy to crash when foots get to close. Anyway, great and fun project.