I use empty toilet paper rolls covered with craft paper to store all of ours in, and they're right here in my desk drawer so we can keep track of them all. We have dozens of them for many different devices ranging from Android phones, iPhone, iPods, Kindles, tablet, cameras, power packs etc. etc. etc. None by the bed though as we have desk chargers we use. There might be one in the cars glovebox, although I may have brought it in after our last plane trip. Pretty sure my fiance' keeps one or two in his briefcase. The majority of them are here in my desk drawer though.