haaa, well your username is inspiration alone. But maybe i should just stick to building a control panel then.
That's what I thought I'd do.
Boy, did that not work out

If you're saving to buy a house, I'd put that front and center.
One possibility is to take an old coffee table or end table and hack it into a simple cocktail cab.
There's a number of very nice examples on the boards here for that.
That's a build that's not too hard, can look reasonably nice in a living room if you're tight on space, still works as a table if you put glass over it, and yet can be perfectly playable for a large number of games.
The rolling cart idea seems great for a projector cart with speakers that you roll out on your lawn to watch movies outside, but not so much for an arcade cab.