Wow it's like nobody cleans using elbow grease? I have a Branson ultrasonic but rarely ever use it is just not worth the time. Don't have a tumbler or vibration polisher, but a few minutes with never dull by hand and most all pinball parts can be easily dealt with.

Novus 2
CLR
IPA
Good old stationary tub water, toothbrush, scrubby sponge.
Vaccum

Occasionally I use demel and buffer.

I can maybe see using the other toys if doing a machine every couple days, but for doing one or two machines a year, do it by hand.