for shelves in my sewing room I went to Lowes and bought 8 ft long 1x12 and 3 closet shelf/rod brackets. (they look like shelf brackets except they have a brace triangle with the closet rod u on the front) Mount the brackets on the wall first (level)on studs, then screw the shelf on from underneath. I put 2- 4 ft by 3/8 inch wooden dowels (lap them by 3 inches and tape together) in the rod brackets and "thread" my spools of ribbon/trims onto it. As the spools empty I wind flat folded trim back on them.