I decided to change things up from my usual big metal tool chest in my garage to something specific for arcade/pinball repair. I wanted something that was portable, preferably with wheels, and configurable. I ended up going with the Dewalt Tstack system (I think Craftsman has a version as well?).
https://www.dewalt.com/products/gear-and-equipment/tool-storage/tstak
This allows me to wheel in 99% of all the tools I'll need for repairs right next to the machine that needs work. I don't know if I'll ever have any games on route, but I'd like to have some soon and this allows me to travel with my tools also.
I have just about everything set, I just need cut some drawer foam so tools don't move around.