My material list is 8 screws, 46 gauge guitar string, a strip of 1/2" playwood that happened to be ripped down to 2 1/2" in my garage, usb cable, piece of flat 1/8" thick plastic and a tiny bit of solder. The way that I screwed/bent the piece of guitar string gives the perfect amount of spring so that when the device is set both are compressed and make contact with the side of the device.
This was very spur of the moment and took me a half hour to build. And it works brilliantly. Yes I could have spent more time on design and material type and getting proper pogo pins. But I'm lazy and intent of this thread is spark ideas in other peoples heads. So now this masterpiece lives on my nightstand and I drop my galnex in at night and wake up to a full charge in the morning without having to use the usb port.
**edit** The pic of the lockscreen is in landscape using the Team Kang AOKP rom.