JAM or JoinMarket might be the most genius idea to increase Bitcoin privacy that I have seen in forever.
One where you can actually earn Bitcoin by just locking Bitcoin away for a while - but this isn't staking, it's a native Bitcoin feature called Timelock (see https://en.bitcoin.it/wiki/Timelock ) where the Bitcoin you lock away continues to be yours and under your custody BEFORE, DURING and AFTER the locking period. Yes that's right, no need to trust anyone else.
See this fascinating thread by nostr:npub1pu5pjm8dzqjtul8t84a3jsehh78jreadp297sqa3as98c5hfym0qu6pn0a
https://twitter.com/raw_avocado/status/1691436684548689920
Damn this is so cool.