What's up at home today...?

I try to avoid contact with epidemiologically relevant population groups as much as I can and so I use delivery services as far as they are offered in my metropolitan area. But tomorrow it looks as if I’m going to a big discounter supermarket myself.

My very high tech fix to my air compressor
There used to be a transparent plastic stopper/plug (don't even know the english name of it) which acted like a little window to see the oil level.
It was leaking way too much lately, so I improvised

Nice, thanks!
Let's see if my FREE solution holds.
If not I'll buy a replacement.