I see someone already tried to convince the Tor project to have an account on nostr. Sadly hasn't worked. I think they'd be a very donated to npub
https://forum.torproject.org/t/tor-project-presence-on-nostr/11656
Discussion
The Tor Project has a Bitcoin donation address here: bc1qtt04zfgjxg7lpqhk9vk8hnmnwf88ucwww5arsd
Personally I believe that a Nostr account would be a waste of time for them. Tor is really in a league of their own when it comes to censorship resistence. Nostr is more comparable to a regular VPN, in the sense that you need a single jurisdiction to allow your activity compared to onion sites, which only require a single jurisdiction to allow Tor traffic.