You can make this crazy easy heart box as part of our MAKE IT EASY Craftalong Challenge, filled with fun and EASY daily themed projects! Today, I’m making a super easy heart box from just one sheet of cardstock … it even has secret hearts inside it for your recipient to discover! Anyone can make this easy heart box - it’s simple to cut and fold, and no glue or tape is necessary! And I’m going to show you exactly how to do it in this tutorial. A couple of years ago I made a heart box that was very intricate. I may have a dozen or more box designs at this point. Learn how to make a crazy easy heart box from just one piece of cardstock … it even has hidden hearts inside! Easy Paper Craft Ideas & Projects Expand.