I used to have mags just stacked on top of each other and they would fall over when I bumped them
I now use the Glade Ware disposable containers. I think they are the 24 oz size. They are big enough to hold 7 or 8 single stack .45acp. mags or several 15 round S&W 5906 mags ( depends on how you stack them in) I use a label maker to label them with what weapon they belong to. They are also stackable. I took one shelf full of mags and junk and changed it to 1/2 shelf. Made more room for guns.
AR mags are still stacked on each other in the back of the safe. I haven't looked for something to put them in yet.
I now use the Glade Ware disposable containers. I think they are the 24 oz size. They are big enough to hold 7 or 8 single stack .45acp. mags or several 15 round S&W 5906 mags ( depends on how you stack them in) I use a label maker to label them with what weapon they belong to. They are also stackable. I took one shelf full of mags and junk and changed it to 1/2 shelf. Made more room for guns.
AR mags are still stacked on each other in the back of the safe. I haven't looked for something to put them in yet.