The SurfShelf is more than just a simple treadmill accessory: this clever gadget “consists of two interlocking polycarbonate pieces supported by either one or two straps to your treadmill, elliptical or stationary bike.” Continue reading for a video.

If rigged up correctly – something I had to ask for help with – it’s incredibly stable, capable of supporting somewhere in the neighborhood of 55 pounds.

[via Gizmodo]