Knock, knock, valentine! Here's an easy-to-make peek-a-boo card that makes an open-and-shut case for your affection.
Cut a square base from card stock .Next, cut a roof, chimney, and windows from contrasting colors, then affix them with a glue stick.
Cut a flap to make the door and glue a school photo behind it.
Draw pane dividers on the windows and write your message on the inside of the door with a marker.
"Valentine, I a door you."
"House it going, bud?"
"Peek-a-boo! I like you!"