There are several uses for spools. I have a cute shelf that the posts that hold the shelves are spools strung on heavy wire. To make, cut 4 lengths of wire a little longer than the height of the shelves. Twist one end of each wire so that the spools will stay in place (like a little ring on the end). Drop one spools onto each wire. Cut 3 pieced of boards for the shelves, about 4 or 5 inches wide and about 8 or 10 inches long. Bore small holes in each corner not getting too close to the edge. Place a wire/spool into each hold. Add spools to each wire to make a separtor post for the next shelf. Add second shelf and more spools to make the next section. The add the top shelf and twist the wire to hold in place. Cut off any remaining wire. Paint as desired. ~~I also use the spools to keep my embroidery floss organized. And, if you are a string saver (dog food bags), a spool is good for holding the string. This is also good for small ribbons or lace. I keep them in clear plastic shoe boxes so I see easily what I have.