What would you do with an old bike rim? Perhaps it's in the garage or is one you had seen at a thrift store. If you said, "Build a rotating side table!" then you're thinking along the same lines as these cats, who have taken spare bike parts to the extreme in a great little diy project...
You'll need 3 bike forks, a bit of plexi, a few small pieces of MDF along with a few pieces of assorted hardware, but making this spinning contraption isn't out of reach for the average diy-er.
Don't be scared when the steps call for you to bust out some urethane plastic, as most don't have it on hand (or would know where to look for it) epoxy putty should be strong enough to hold fast! Plus, it can be found at your local hardware or automotive stores.
There's a great tutorial with pictures to guide you along the way over at Popular Mechanics.