As with everything else in his life, Sheldon is both particular and frugal when it comes to accessorizing, which is why he's stayed loyal to this distressed canvas Goorin Brothers bag for several seasons. It's no longer available, but Big Bang fans get a similar look—with plenty of room for storing daily neccessities—with this Quiksilver “Plunging Waves” soft cotton bag ($70; quiksilver.com).