Even an oscillating fan has the power to turn a head, but they're unreliable due to overheating in an enclosed head situation unless you turn the unit upside down and use the pedestal as the head mount. You might also consider the small motors used for Xmas animated deer, or the lasy susan motors out of dead microwave ovens (use caution here, there is a capacitor inside microwave ovens that stores quite a jolt of power even after being unplugged).