Build Your Own Vertical-Axis Wind Turbine On The Cheap - Didn't realize vertical wind turbines existed. The scale of this one and the fact that it supposedly doesn't require gale force winds to produce power makes it definitely worth looking into.
DIY Berry Picker: This berry picker is made out of PVC pipe. Heat is used to shape the plastic. Two "fingers" at the working end do the picking. The berry then falls through the pipe and lands in a plastic bag tied to the other end.