A sysadmin couldn't install a Debian server, because the internet was unavailable. There were 2 net cards in the machine (either had an interface twice the size of the PCI slot it was sitting in, the other was regular PCI). My dear mentor put the LAN cable into the regular card, the told the installer to use the other. I told him to finish my work and installed the server for him.

Same sysadmin told me to graft two CAT5e cables. I wired a small cable (10 cm), starting with green-white at both ends, then grefted the two cables with it. Later he complained, that I made a crossed wiring, because the other cables started with orage-white. I couldn't explain, if you double-cross a wire it becomes a straight one. Then I told him, that modern routers configure themsefves, no matter how messed up the wiring.

At another company there were 3 pieces of free antivirus on every PC. A onedrive (free) account was our cloud service. The boss wanted me to teach the store manager how to develop a website and I had one week to do that, that was my last week.