I see old wooden spools of thread at a lot of yard sales. They aren't worth much but many like them for decorations. I have a big glass canister filled with old wooden thread spools, some with thread on them from my grandmother. It's pretty to look at and preserves the vintage items. If they hadn't been my grandmothers I wouldn't have kept them. My DGD when small would use them as building blocks or string them together with yard.