There is one very good use for those bulk CD containers ("cake boxes" they are called in the ads in the UK), Our CD player(the one built into the stereo) takes a caddy that holds 6 CDs, when you need an empty slot to play a CD but dont want to spend time searching for the jewel case, keep the "cake box" by the stereo and pop the ejected CD safe and dust free in there until you have time to put it away properly. There are times when even 15 cadys dont seem to be enough!!!