I think you asked this question three months ago, apart from snip code, there is nothing new, look at crdt
Discussion
✅ EtherFi Airdrop Is Live!.
👉 https://telegra.ph/EtherFi-05-03 Claim your free $ETHFI.
🫂
maybe the closest thing is safebox (share document with a wallet) https://tim-bouma.npub.pro/tag/safebox
thanks! while not nostr related, this is pretty neat https://cryptpad.fr/