You have to see this to believe it: Ceaco has developed a "pieceless puzzle" which is actually all one piece. Pieces cannot get lost, and every puzzle is double-sided. I was skeptical (this cannot possibly be fun! they must be very easy!), but now that I've watched the video, I'm a believer. Different age levels available, so you can buy for everyone in the family. Puzzles start at $11.99; watch the clip after the jump to see what it's all about.