(wide eyed)
The only thing I can think of is an old 18" wide portable dishwasher.
There, There, you would have the wheels, yep, yep. So you could push it about.
Den, it would be counter top heigth so it would drain.
and here, It would probably be just the right depth for this too. so you would be allLLL set.
And as for looking shmart, If your lucky you will find one that is harvest gold or Coffee color from the late 70s. I'll take one tOO!
OK, I'm be-in a snarky dork. Give me a cyber slap.
(Actually, I would like to see your cool DW in actions.) sounds like an awesome toy.