1) Organ pipe style wind bellows, see saw foot activated wooden thingummybobs:

Jump up and down from end to end and get the organ stylee sounds, like this:
See Saw Organ Wav
2) Bells rung by jumping up and down on a 3 x 3 metal pad matrix, tuned to a 3 octave triad. (*I think, havent ratified that)

Sounds like this:
Jump Bells wav
Pretty cool I thought. s.me in the pic with my H2 and my lil girl jumping on the bells.