A store in the UK has a bunch of unique clocks on sale made from old recycled bicycle parts. The clock pictured above is made from a chainring face which is suspended on a forged wheel rim that has been curled. The pendulum is also a bicycle part and uses a cog for the weight.
The clock measures 12" x 8" x 6" and runs on a AA battery. A number of other styles are also available for you to choose from ranging from £18 - £60 GBP.