Personally, I always wanted the cartridge belts.  I have now been accumulating stuff for more than 50 years but I don't think I have ever seen an original that was not pretty ratty.  I bought a couple of reproduction Mills belts from S&S.  That itch has been scratched, but I am still pondering buckles.  Any Illinois National Guard buckles around?

Marginally OT, but I too have been considering a new gun room.  When I was a kid, gun rooms had guns on the wall.  Some were worthy of discussion and others were "wall hangers", hence the term.  But now we lock our guns away.  What does one put on the wall of the new gun room?  I was going to go for books, but that would make it the new library.