I am a sucker for Valentine’s Day. The declarations of love, the flowers, the candy, the cards. There are many fine examples of pop-up and movable Valentine cards and love tokens. One of my favorite examples is a design I received a few years ago that was created at the turn of the century in Germany. A child stands facing a chalkboard and with the turn of the wheel they scrawl a message across the board. As the viewer continues to turn the wheel along the edge of the card the child erases the words and then starts again. A charmingly simple mechanism sharing a modest message – I love it.