Hi everyone! I usually carry something like 5 spare cartridges in their orginal packaging in my backpack wherever I go. Problem is, after a while of being in there, the cardboard packaging more or less gets destroyed. Does anyone know of a company that makes a hard carry case for international long (or short for that matter) cartridges? Has somebody thought of a clever solution to this? I can't believe I would be the only one with this problem! Thank you all very much in advance! - 3nding