Gridfinity holders for Wire Offcuts

Storage for wire offcuts, for people who like to reuse things and can't bring themselves to throw short bits of wire away. Get rid of the box of wire spaghetti and find the perfect reused bit of wire quickly when you need it. Most are 4u high, as I found this to be a good height to hold the wire snugly, without short bits getting lost in the bottom and being hard to retrieve.