Hatching eggs does not use the accelerometer in any way, so mimicking steps does not hatch eggs. Egg hatching uses straight-line distance measuring between times of server communication.At most this will give you .1 to .3 km per hour due to GPS triangulation jitter.
iThrone: Build an Iron Throne for your phone for less than $25
Yet Another Captain America Shield.. for pretty cheap.
How To Use Lighting, Audio, and Monitors in a Puppet Video