I am putting my vintage buttons, some still on cards, in a glass container with lid so that I can see the beauties.
My own button collection is sorted by individual style and color before being threaded together with a short piece of floral wire. I cut the wire long enough to be able to twist the ends closed like a twist tie. Extra buttons with accompanying info from purchased garments are kept together in a quart plastic freezer bag.
My aunt used to collect buttons, which was her main hobby. She had rack after rack of buttons mounted on paper boards carefully placed in custom frames. Her husband made the frames, I suppose she used frames because her father had a decorating store where he sold paint, wallpaper, custom frames, replacement glass, etc. She and my mother certainly knew how to replace glass panes and putty the edges. It's interesting to me that how our past experiences influence our current actions.