Termux on Android.

I've got some videos on my phone I might want to watch on random computers, so I serve them up with NGINX. I've got wget-created mirrors of some old websites on my phone, so I serve them up with NGINX. Other files I may want to move out from my phone to untrusted computers on the network can too be served up simply by NGINX.
I've got the full Wikipedia zim file from Kiwix on my Micro SD card, so I run kiwix-serve (behind NGINX).
I've got all the music on my phone, naturally the phone is then running my Navidrome server (behind NGINX).
Of course, I may want to manage this from a computer, so it's running SSH server.
My phone is always connected to VPN and uses NextDNS, naturally I may want to use this with other computers, but I can't install software to computers I don't own (I mean, I can, but ... it would be disliked), naturally it is then running Tiniproxy HTTP proxy server.
Some desktop GUI apps can be useful on a phone too. noaa-apt, Kid3, Audacity, desktop Firefox, Handbrake because I am too dumb for ffmpeg, so I run XFCE DE on it. Naturally, I can access it from a computer (I know) too, after all it's accessed via a VNC server.
Am I stupid enough to expose something using HTTP protocol running on my phone to the internet? Of course I am! I can use cloudflared.
Do I want to encrypt a file? I can use GPG.
Do I want to create a compressed archive? I've got TAr and GZip.
Do I want to browse Gopher? I've got Lynx.
SSH or telnet somewhere? The clients are there.