Nice writeup but use legacy phone is really need to do some tuning and hacks, but that's fun to do if one like it.

For me I have a 24x7 running intel gen 11 nuc, i am lucky to get it installed with 32G memory and two NVME disks years ago and cannot image add those memory and NVME disk with much higher price

Just run some docker and VM on that, use cloudflare tunnel or tailscale funnel if you want to expose some service to the wild internet

I recently even find a pixel 5 and passthrough it to the openclaw VM on that nuc, let it browse the X to find some posts and relax me from doom scrolling, though seems timeline still bad and no much valued post find.