My mom is a first grade teacher and last week there were Parent-Teacher conferences. It turned out that the evening was very cold but everyone managed to make it out to the school. The next day, one of my mom's students brought her a card. The parents had written, "Thanks for coming out in the cold for the conferences. We really appreciate all that you do for our daughter. Here is something to warm you up." And they had included a $5 Starbucks gift card. How sweet?!?
(And since my mom doesn't drink coffee she gave it to me :) But she kept the note)