I love the way y'all have figured out a way to tastefully display you cartridges. My collection now is up to about 230 items and I haven't yet been able to display them well. Normally, I have them set up on a book shelf in my office (aka reloading room), but I continually bump the shelf and half of them fall down. I would like to have them laying down rather than standing up so the heads will show and I also don't want them permanently mounted because I like to handle them and often change the order because of new acquisitions. I would love some kind of glass case with shelves that is not too feminine looking. Haven't found anything suitable yet.
Some of mine are complete cartridges, but most are just empty brass. I have everything from .22 CB cap to 120mm cannon shells. The bigger stuff I am not worried about. It either serves as door stops or individual decorations somewhere else.