Ok here is a list of things that I would buy or have difficulty getting etc.
This is a think out loud list and I may have the name of some items incorrect or you may have them already listed and I couldn't find them or just unobtainable.
Cabinet Stencils
Gottlieb EM/SS Door Skins
Gottlieb EM/SS legs
Gottlieb door stickers
Gottlieb EM/SS wire form lane
Playfield glass guides
System 1 flipper kits
System 1 displays
More lane guide choices/colours for EM/SS
Gottlieb EM/SS bumper caps
White button housing flipper gottlieb old style EM/SS
Gottlieb ball shooter front metal plate EM/SS
Spare components for Pascal Boards - fuses/transistors/diodes
Easier way of identifying screws (example where used)
Cheers: Brettski... :)