I do as Aerbabe does!
Normally drain the fuel in the hangar so having checked it pour it into an old syrup tin. When I want to wipe the belly down I use contents of said tin.
I use another syrup tin to catch any goop from the crankcase breather then use the contents of this tin to lubricate the rollers on the hangar door.
I save the waste oil after an oil change and use this for the chain bath in the gang mowers.
What a rock and roll life, eh?
Stik