Sigh. I've got blade fuses, spare trips, cables, hydraulic crimps, wagos, spare 13A sockets, and a ton of other electronics.

I blew a 13A fuse in a plug. Guess what I don't have ? And the two spare plugs I have before anyone suggests that are both 5A fuses as I already looked.

Laughing my head off that someone is selling "audio grade" 13A fuses at 63quid each on ebay - and has a 100% rating 8)
@etchedpixels hah :) Fuses are one of the few things I insist on physically going into a well-known bricks and mortar store to get - so hard to trust anything else these days, even on Amazon there's presumably still a commingling risk :(
@srtcd424 Yep - ditto for plugs when I'm wiring stuff that's going to pull 10A. Especially stuff like old computer kit that wants two power supplies with 10A on each!
@etchedpixels I worry slightly less about things that can be non-destructively tested .. I finally got an infrared camera last year, and I'm learning to just inspect any new bit of kit using it while running at a reasonable load. Circuit breakers are a big pain in the arse - usually hard to generate enough current to test, proper commercial test kit is thousands. But at the same time you can't just pop into B&Q for weird DC MCBs :(