Back in the day- I connected a IIgs to a Well Gardner monitor in a
mini arcade cabinet, put the IIgs keyboard on the panel with a
trackball next to it.

The cabinet had two speakers in the front- hooked up an MDIdeas card,
used the amp in the cabinet and had a kiosk IIgs for a school
project.

The picture wasn't bad.

Likewise- the IIgs RGB monitor made a nice table top test rig monitor
for a JAMMA harness.

The original "MAME" ;-) your console was a pile of wires connected to
a JAMMA spec control panel and power supply, and your cartridges were
"motherboards".
--- SBBSecho 2.12-Win32