Knock Knock

If you've stuffed a Christmas stocking in the last ten years, chances are you've used a product conceived by Knock Knock. You know them, those tongue-in-cheek sticky notes and pre-printed grocery list pads in perky colors. Berkeley, California native Jen Bilik, who founded the company in 2002, achieved her goal, which was to create witty, design-driven goodies. Let's check out her inspirations in this week's Friday Five, some of which should make you smile.