["Seek Blower For Voicing Organ Pipes", Paul Sysum in 030108 MMDigest]

I'm surprised that not a single person suggested he make a foot pumped
wind supply.  A single pipe doesn't use a whole lot of wind and a foot
bellows with a small regulator and reservoir should do the job nicely.
It's simply done, takes up little space, low cost, easily adjustable,
great conversation piece, etc.

Believe me, I know -- it's not difficult to pump with one foot while
adjusting the pipe voicing.  I used to use a stool at times and at
other times I just stood on one foot while pumping with the other.

For what it's worth...

Hal Davis