This innovative gizmo, which will power OLPC 100$ laptops from MIT, is useful in almost any remote power applications. It harnesses full 60W from hand muscles, and one minute of using it can power * 20 minutes of talk time on a mobile phone * 1 hour of ultrabright LED flashlight use * 3 hours play time on an iPod Shuffle (about one pull per song) and finally *6 min of OLPC laptop use, which right now consumes 10W. Their target is 2W. When that happens, you only need to crank for 2 mins to get hour of running laptop. Here is info about OLPC's power consumption.