Some of the MMD readers may not be aware of the 8-note paper roll
operated valve-less PIPE organ made entirely from thin card and
assembled from a kit.

Except for one elastic band and a paper clip everything in the organ is
made from card -- bellows, pipes, crank, relief valve .  The completed
organ is decorated in coloured (or 'colored') pictures.  To my
knowledge the kit is still available in the US or in England.

It was designed by the winner of the BBC paper engineering competition.
It comes complete with about one hundred feet of roll paper for cutting
your own music.

Phil Dayson