I have had an interest in mechanical organs for a long time and back in 2004 I discovered the John Smith plans to make your own busker which I have done. Since then John has published several further plans the latest of which is a midi controlled system. This has taught me how this system wortks and I have now used the information to make a number of organs of varying sizes which can be seen here.
I am able to make midi controlled hand turned busker style organs to order, if you would like more information or a price please email me. I hope to set up a website eventually to market them properly.
I have made my own marble runs after being inspired by many videos on here and visting the House of Marbles in Devon UK who have four very impressive marble runs by Alex Schmidt icluding possibly the largest run in the world using snooker balls and taking up an entire wall.