I recently bought a Brume 2 from Gl.Inet, on sale I think it cost me 60€, it runs openWRT and works really well. It has the added bonus of providing a built-in wireguard server (and also client) so I can easily access my home network from anywhere.
If you can spare 130€ the Brume 3 is now out and quite a bit better.



The key here being that you actually remember the file exists, because it’s important. Some other random spreadsheet you don’t even remember exists because you haven’t needed it since forever is probably not all that important to backup.
If you loose something without ever realizing you lost it, it was not important so there would be no reason to make a backup.