I don't. Yet.
Things floating around in my head
Another cab like #2 but with a vertical monitor. Most likely due to the donation of a 14" IBM monitor in great condition with a 5:4 ratio. Perfect :)
Compact sit-in driver cab.
Mechanical games like a shooting gallery or ball toss.
Fully portable unit with projector and laptop. Big screen gaming anywhere a wall is handy.
Table-top unit with lcd and laptop. Super slim cocktail.