It would definitely not be enough. Here's an example - you know those flashlights that you have to shake to use? You have to shake the heck out of them to use them - then you get like 15 minutes of usable light out of them before you have to shake them again. And that's powering a tiny little LED. Try doing that for something that has a rumble motor and transmitting wireless.
Even if you removed the rumble motor, the drain would be tremendous.
Watches AFAIK use the same principle but they use /very/ little power, plus your arm is moving ALL the time, so it gets constantly charged.