I took the screen off my old dell laptop and turned it into a mini blade server with built in UPS. It ran for years. I have no doubt the battery was knackered by the end.

The only reason I replaced it with a Mac Mini 2012 was because it didn’t support usb3 and 4K video saturated the usb bandwidth.

Now my 2012 runs Ubuntu server + docker for those interested :)

Sort of? https://developers.cloudflare.com/cloudflare-one/connections/connect-apps/use-cases/rdp/ - I have no idea how to do it though.

I've had SSH and VNC sessions rendered in web pages with tunnels, but never RDP.

I would prefer to use TailScale (www.tailscale.com) for something like RDP though, much easier to configure / set up and again you're hiding behind their infrastructure.

Cloudflare tunnels is the way to go for small self hosted content. You’re hiding behind their ddos protection and your IP / location remains hidden from end users.