surprise pocket!

Tonight while eating dinner and doing homework at Panera I found a brand new zipper pocket on my backpack. I had never seen the thing before in my whole life. I used this backpack at UPS, in London, at UPS again, and all of last semester. Yet it wasn't until today that I found the elusive pocket! What compartmental convenience have I been missing out on?! You know what's even better than finding a brand new pocket? Finding money in that pocket. Alas, tonight I was not so lucky.