I think these are empty thread spools with a button glued onto the end?
Wine Cork Spools - original spools from cork - set of 12
Wine Cork Spools! Get organized and wrap up your scraps. Would make a cute one of a kind party favor with your own trim wrapped on them. You can custom yourself by stamping on them. They circles are cut from paper board. SO EASY TO MAKE
use a hanging file and filing cabinet for store fabric