It gives me great joy every time I give out my ꩰ.com (👋 npub1pquyr2evzyz708p34nmuk4mde8y9xcduc9z5exvhltgdq5c96fdslylw7t (npub1pqu…lw7t)) email address or send an email from it. I've gotten so much value out of the $8 I spent on that domain.
(I haven't yet been brave enough to test the silliness that would occur if I use my RTL character shenanigans domains, e.g. ۦ.com)