PowerPuck Hand-Cranked USB Charging Enclosure (IKEA flashlight hack)
Re-Packaging of low-cost IKEA LJUSA LED Flashlight (http://www.ikea.com/us/en/catalog/products/30190857/) for use charging USB devices/phones while on the go.
Super capacitor design means it is lightweight but of course also means charging is more of a "real time" affair vs. charging intermediate battery first.
Please let me know if this doesn't work well for you, its been awhile since I made this and I only completed one so there might be some clearance issues or things I worked around.