Whatever you do PLEASE DON'T toss them, if you want to donate them to some one, you could ask a local quilt shop.
I see a lot of older items on display. I have a collection of spools also. I bought them at a yard sale. I even keep the plastic ones, I have made crocheted drum Christmas ornaments, using the spool instead of stuffing. The regular sized plastic spools are just the right size, and are not too heavy.