I have a 30L Ultrasonic cleaner under my work bench. .
Drag it out on the floor close to the drain when needed.
Easy to flush water into the drain when finished.
A cheaper Chinese model sold everywhere on eBay and more, around $350US from UK, then within EU so no extra customs. Work fine with heater.
I bought a 3L of similar design (good price, £60) for small stuff, maybe sooty not much used spark plugs
That take not much space on a shelf.
I need to clear my garage shelves and floor from CB750 parts. Put them together in one pile and call it a running bike