There was a time when people would collect America Online CDs for various art projects, but that got old. There was only so much you could do when working with materials of that size. Hard disks are an entirely different matter, however, as TechEBlog proves with this post on a "Hard Drive Platter Motorcycle" from some guy who obviously has far too much time on his hands. If you think this was a silly waste of time, consider this: It's more productive than setting up hard drive dominoes.
Some things in life really are free.
Board games, arcade games, shooters, puzzles, simulations -- there's something for everyone.