I have a shelf outside of my classroom for lunchboxes and sign in sheets. I decided for Valentines day to put a bulletin board set on the wall above with mavelous tape. Each of the hearts has one f the fruits of the spirits on it (love, joy, peace, patience, kindness, gentleness, faith and self-control from Galations in the Bible) if you are a secular school you could put the name of your students on the hearts instead. I think this set is from Carson Dellosa.
Also on my table is a cereal box covered with board paper and labeled love notes. There are markers and paper hearts there for the parents to write their kiddos a little love note. Then I read a few each day in class until Valentines Day.