So, I was checking Treehugger this morning and ran across something very cool - a bicycle-powered centrifuge. Such a powerful and empowering idea from something so very simple. You can read about it here: Student invents low-tech bicycle-powered blood centrifuge
So, it got the old brain to rolling around the other ideas floating around the internet about bicycle-powered machines, and I hoped you'd be as inspired by the ideas as I am. Enjoy!
May your brain and your legs power us into a healthier world!
PS. Many of these can be found as projects on Instructables!