Dumb and probably not what you're after -- but I own my hangar (port-a-port) at an airport that doesn't necessarily want me there, and it shows through in many ways.
My favorite aviation purchase recently is a little Genie scissor lift.
I have used it to patch all of the ceiling leaks, run conduit for lights, outlets and an entire off-grid solar setup (because we don't get electricity in our hangars)
This has made living with the plane many-fold better for me.
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Picked it up for well under a grand from Iron Planet and fetched it from a local rental yard. I look for stupid reasons now to LARP as an electrician on days when I don't want to LARP as a pilot
As a bonus -- no more standing in a lagoon on soggy days when I want to noodle with the plane.