Yesterday I got two great packages in the mail: one contained the book Deenie, by Judy Blume, which I have never read but decided I needed to read after watching this video, and the other contained hair chalk, something that allegedly would make the fading blue tips of my hair crazy colors once again. If I was 13, it would have been a dream day. Even at 30, I was pretty excited. The book will have to wait until I have 2 consecutive hours of free time but the hair chalk was a must-do-now type things so in the afternoon, my KQED Pop co-editor, Emmanuel Hapsis, helped me test out what might be the coolest product ever invented. Below: our adventure. Enjoy.