I usually order wires as loose spools / rings because I don't really need that much. It's always hard to keep them untangled in a drawer or somewhere else so I designed these simple organizers. They come in two different sizes with 42 mm and 68 mm ring diameter. The mount is intended for a 12 mm axis and can be clamped to any 50 mm board, like the Ikea lack wall shelves.

The two parts of each organizer are simply press fitted, nothing fancy.