Like it or not, YouTube still has a fuckton of good, informative tutorials and advice on how to fix things or make things made by individuals with a phone camera and no script, who make them not for money but for the pride in sharing their knowledge. I shared some fix it videos for my van and a very obscure phone, and consumed a lot of fix it videos for washing machines, motorbikes and furniture.
If the self checkout spazzes put and needs me to get an assistant, that's the last thing I scan at the checkout. Lady comes over, overrides the fail, I say thank you, pay for the stuff while she's standing there, and put it back in the trolley with the stuff I didn't scan yet. You see, I was so frazzled and confused by the disruption that I forgot I still had things to scan. Plausible deniability, I never hid anything, it was all out in the open, and the lady was just standing there. If she mentions it, then I can just resume scanning those items and pay for them too. This has not happened in several dozen grocery trips.
Jimothy on special occasions