I like nostr:npub1mutnyacc9uc4t5mmxvpprwsauj5p2qxq95v4a9j0jxl8wnkfvuyque23vg for nostr. It has a custodial fedmints for anything less than 200000 SATs, but over that it will open a lightning channel. It's a good way to balance fees and ease of use with self custody.