Many years ago an acquaintance of mine told me that the Daily Telegraph had a Valentines offer of a dozen red roses sent to one recipient, or for the same price, one red rose sent to 12 different recipients.
He said that he had taken the offer of sending roses to 12 persons – I never asked him whether he had sent them anonymously or not –but it got me thinking, and over the next few years I sent different young ladies (who I knew were not in a romantic relationship) anonymous Valentines cards.
The purpose was to cheer them up (maybe they had a secret admirer), I went to some effort to ensure that they would not identify me as the sender (which would likely depress them).