Any self-respecting prankster always has tools at the ready, but it takes a truly bold master of mischief to carry them in something that alerts everyone ahead of time to your iniquitous intentions. That what you'll get with this multi-pocketed knapsack, decorated with the Marauder's Map and the magic words needed to activate it: I solemnly swear that I am up to no good. Now when you pull your next practical joke, your targets can't say you didn't warn them. New for the 2016 - 2017 school year, or use around your home or office!