Damn, I wasn't going to do this, because I didn't expect to get any -- partly because I didn't send any -- but:
Card, signed. Unexpected but much appreciated, thank you very lovely person.
Card, anonymous. Contained a chocolate heart. Also unexpected, and also appreciated, thank you other lovely person... but I'd love to know you are! (I really don't get the anonymity thing.)
One-word SMS. Does that count? I think it does. <smile>