Despite the blister on my foot I couldn't resist going out and trying out my new Powerslide Fothon wheels for my inline skates. I got a 4-pack of wheels with red LEDs:
The wheels contain a small generator that uses the rotation of the wheel to generate electricity for the LEDs, so they come on when the wheels turn. Because all of this slows down the wheels a bit, I'm only using one on each skate. They also come in white, blue and green.
And as always, iPhone slow motion video for the win!