There's also vaultwarden which is a super lightweight single container bitwarden server.
MangoPenguin
Docker is the better option IMO if you already have it set up, much easier to manage.
Crazy, makes me wonder why they picked that service.
I use SFTPGo, it's also my WebDAV server, but I don't know if it works on openwrt.
What is the $39 for??
My Galaxy S21 has that, there's a button to dismiss a notification and show it again in X minutes/hours.
An HTTP based file browser is probably the most universal, as all anyone needs is a web browser.
The almost free method is use the PSU from the old PC, and grab a 5V relay with flyback diode to trigger the PS_ON pin and run that off a USB port on the mini PC. That way the PSU powers up automatically with the rest.
Maybe a potential option is Opnsense on some x86 hardware? Would be really easy to find a mini PC or something.
Using an image with a watermark will get you sent legal threats or fines.
Any idea how well verified the images are on those sites? What's the chance that one with copyright gets uploaded and I get hit with a giant fine for using it?
With a normal CPU around 65W, you would be just fine with a 450W PSU, probably 350W too.