bike powered blender. Since appliances account for over 20% of your electric bill, this is one less energy consuming machine in your house. And making a fruit smoothie is twice as good for you as before; both in nutritional value, and also in the exercise you get. It isn't an incredibly difficult build, and even the most inexperienced Maker should be able to complete it in less than 3 hours (not counting glue drying time).
Velomobiles, also known as human-powered vehicles, are fully (or almost fully) enclosed bikes/trikes, that have been gaining in popularity over the last few years. The pedal powered bikes provide protection from rain, are larger than normal bikes (some are large enough to carry two adults), and can sometimes include electric motors to make that pedal power go a little further.
While most bike locks or travel locks are made from metal the Ottolock uses one of the most light yet powerful polymers known to man. Kevlar. The same material used in bulletproof vests, the Kevlar framework of the Ottolock allows it to be lightweight, but virtually indestructible. No amounts of strength can break apart the Ottolock.
Google Invests in Shweeb's Pedal-Powered Bike Monorail