And cache
you can run tor on it
i dont think alot of ppl need a super small comp. it comes with disadvantages. harder or more limited upgrades.
my guess is: quadrennial lenovo usff/sff . the intel nuc is nice&easy to uprade the limited set of parts for ultra longterm use.
https://en.wikipedia.org/wiki/Opentracker
https://tor.stackexchange.com/questions/64/how-can-bittorrent-traffic-be-anonymized-with-tor proxy setting for tracker over tor network
i think you can just load torrent files into a bittorrent client to assist with peering
And cache