Just got back and saw some totally amazing drummers there.
This man was probably the most impressive:
He plays a snare on his right foot and has a drumstick taped right above his knee. He plays with two sticks in his left hand (like a mallet or quad player) and plucks at his guitar with his right hand while holding a drumstick, all singing at the same time. He's very coordinated. That video is from last year and he seems to have improved since then.