When we asked readers to tell us about the most memorable gifts of time and care they received, we were flooded with nearly 600 responses. Amid the answers, many trends emerged. Three readers wrote in to say how much they appreciated having their car cleaned. Twenty-four readers told us about handmade cards, 23 told about photographs, 22 about lists of memories or reasons they were loved. For several people, that list took the form of a pack of playing cards transformed into “52 reasons I love you” — if you have a pack of cards and a Sharpie lying around, your unfinished holiday shopping might just have found an answer.