Modeled a little bracket, to build a little rack, to organize a little filament.

If you have some ¾ inch plywood lying around, cut four 5 inch lengths, four 10 inch lengths, and four 15 inch lengths to ¾ inch square. round over your corners to 1/8 inch and press the pieces into the bracket. If you want to secure the connection beyond press fit, run 1 ¼ inch plywood screws through the holes.

*Update, I've added more brackets and feet. I've also added color, because stripes look amazing.