Office chair bike
This is a recumbent bike with a very comfy seat. It's a 35 pound leather executive office chair connected to a 16" (little girl's) Princess bike re-welded into a recumbent (recliner bike) and using a piece of another donor bike frame. It was built in honor of "Bike to Work Day". Instructables has more details on how you can make such a bike yourself.
Link & Image: Instructables via Make
Tags: Bicycle | Chair | DIY