This seems to be a new craze in elementary and preschools. I never had a homemade Valentine's Box for school. We always had a white crumpled paper sack.

My wife borrowed this idea form a friends Facebook post. An old shoe box, yellow tissue paper, a Mason Jar lid and some construction paper and glue. I was impressed how it turned out.  Brody will use this box today to collect his Valentine's Cards at school. Cards go in the Minion's mouth.The shoe box lid comes off to retrieve the cards.