Power "Tiny Arcade" Machines Without Batteries 

I over-engineered this one! I ended up abandoning the idea of powering them all. I just put lithium batteries in them instead. All the wiring was a mess and made it hard to take them off the shelf to play. It would have been really cool to turn them all on at once with a switch, and leave them running with the attract sounds, but the problem is that they don't stay on very long before they automatically turn off. So turning them all on is a pretty short-lived experience. Lithium batteries were expensive, but no more expensive than all those adapters.

@@kyle5574 Ah, well it happens! Still a good idea. Thank you so much for the update. LI batteries do sound like a solution that makes for a more playable display!