I don't know if this kit is available outside Japan, but it looks neat
and a fully chromatic 36-note range could be fun to make rolls for.

  http://www.elekit.co.jp/material/english_product_html/BT-830.php

Jim Katz

 [ At http://technabob.com/blog/2007/03/20/otokibako-crank-up-the-tunes-literally/
 [
 [   Elekit's Otokibako plays music data from strips of paper with
 [   black and white bars [printed] on them.  You can generate your
 [   own music strips using the provided software (Windows only.) ...
 [   Each Otokibako kit will set you back 3,500 yen (about 30 US$),
 [   plus overseas shipping.
 [
 [ -- Robbie