No matter what age you are, getting your hands on a sheet of bubble wrap and popping every single little air-filled bubble brings deep satisfaction, which is why we love the POP POP keychain by Mugen. This little baby will give you endless hours of popping pleasure, just keep pressing the bubble-wrap mimicking buttons and enjoy the pops (and from what we hear, there’s a surprise noise that comes out of some keys at random…this doubles the fun, no?). Pop away until you’re blue in the face. Surely this will annoy the pants off fellow bus riders, students and colleagues who are unfortunate enough to share a room with you. Available in several colours.