On my home network, devices are backed up using Time Machine over the network. I also use Backblaze to make a second backup of data to their cloud service, using my own private key. Lastly, I throw some backups on a USB drive that I keep in a fire safe.
I definitely do the same thing, specially when I know I want something from Wikipedia vs. something else. I use Alfred on my Mac to do it. I’ve setup custom queries for things like Memory Alpha, Urban Dictionary, etc.