I like Dan's idea of sharing useful items with the forum. In that spirit, I will add a favorite, one which many of you might not be familiar with.
The product is called "mesh sleeving". It is available from Reid Supply (reidsupply.com). It is available in eight different diameters, each size being a different color. it is sold by the foot and is quite reasonably priced.
I first encountered it being used to insulate bonding (grounding) material for telephone cable. I found the scraps were very useful to protect things like router bits, threaded components and things with sharp edges like chisels. The weaving allows ventilation, visibility and protection. I also use it to protect my files. It just slides on and protects my Nicholsons from the abrasive world whlle in toolboxes.
Three feet of each of the four smaller sizes should set one back less than ten bucks.
Reid is also a useful place for all sorts of jigmaking materials, knobs, wheels, drill bits, etc.
Ken