I was quarantined twice so I got up to all sorts of stuff.
I replaced the ancient Mac mini I have used as a server for Apple stuff and the UniFi controller with a Raspberry Pi 4. I also moved Pi-Hole from a flaky Pi Zero to that Pi 4. Since I was doing Time Machine backups to a USB hard drive attached to that Mac mini I moved that 4TB drive into an old Apple Time Capsule. A device that was clearly never intended to be disassembled by anybody.
I moved my UniFi Video security setup from an old Dell I picked out of the garbage at work to a new 1U PC running Debian.
I bludgeoned macOS Catalina on to my ten year old Mac Pro tower which ran surprisingly well.
I replaced the logicboard in my pfSense system which had a proprietary fan that was just howling.