Good thread as I has asked before about how to store those large dies. Right now I'm storing 3 large ones flat on a very narrow/shallow shelf on my cutting table cause I can't find anywhere else in my current sewing room to put them. And my son made this shelf to my specs so before then I had to store them on totes on shelves which I was afraid they'd fall from.
But now I know what I'm going to ask my DH's brother in law to make for me when I move and set up the next sewing room.
In the meantime, I'll put a sheet of Bristol board over them to protect from dust - which lord knows there is enough of in this old house....