Also, what about cashu options like nostr:nprofile1qqstxwlea9ah3u6kjjszu6a7lrnhqkfh8eptp2z6v0e9558tlkkl2rgpzemhxue69uhk2er9dchxummnw3ezumrpdejz7qgwwaehxw309ahx7uewd3hkctcpremhxue69uhkummnw3ez6ur4vgh8wetvd3hhyer9wghxuet59u4kl3vp? They're not self-custodial, but there's pretty good privacy guarantees for small amounts, and you can sweeping to self-custody once your balance gets to a certain level