mldonkey for ed2k/kad network and bittorrent

You still have realvnc lite. It is free, 1 user, 3 machines, less features, but the basics still there.

Well you could run these services in your server (only if you have enough spare bandwidth, ram and cpu) to help the comunity to circumvent censorship in some countries, like Russia or Iran. Here you have more information for tor and i2pd.

Tor relay (guard/middle or bridge/snowflake) and i2p node (i2p, i2p+ or i2pd)

Then samsung galaxy a35.

Samsung phones nowadays are one of the best software support on every budget, starting with the A15 4G (~150€) with 5 years to the flagship, S24 ultra with 7 years.

Samsung galaxy A15 5G, Cheap phone (~180$), micro-sd, headphone jack, good software support (4 OS updates, 5 years security updates), good battery, 1080p amoled 90Hz 800 nits.