i would make to make my bike to a source of power.
e.x.When i m at home take my bike inside and while i do pedals electricity is produced and i can watch tv without put it in the socket.
I mean if there is a way to convert the movement of the pentals to usefull power.
So i can charge my phone or store the energy and turn on the lights for some time.
I think its a good idea. Like the bikes in the gym. How can you make that? Anybody knows?