Surgeon Simulator - I wanted to make something silly even sillier. Myo doesn't allow mouse manipulation and the game read based on mouse acceleration, so I put together a macro script to listen on top of the Lua script. Whenever a significant gesture was made, the macro manipulated the game player.
Myo soundboard - Could be used as presentation tools, anybody performing work that needs triggered audio, or someone wanting to play around with a fun app. The cool part about this app is the motion detection and saving. When the user assigns a custom gesture to a sound, I map out all of the gesture's rotational information and save it. A percentage errors algorithm is used for when the user makes a gesture to allow for discrepancy.