I was going to mention Panduit too, but originally refrained from posting. If You have never used Panduit, choose wisely the room where it initially is install

I was going to mention Panduit too, but originally refrained from posting. If You have never used Panduit, choose wisely the room where it initially is installed. Start off with the lab or workshop or under kitchen cupboards (ie, places where the other half isn't going to get bothered by it). Also, it helps if the area has many semi-permanent cable runs ("this extension will only be here for a few days..." - unintentional fib). Personally, every time I install a new rack or mounting board (think 1m x 2.5m board on a wall to hold tools or "temporary" power strip/network equipment/test fixtures), I put in a length of F2x3 "narrow slotted duct". I use much smaller under the cabinets. The larger ducts are good for hiding the extra cable length so only what is needed escapes the enclosure. Initially, it is often ugly. I would not want to live without it. Bonus points for creative mounting (the other half still has not noticed the piece across the lower back of the upright piano but has noticed the lack of cables).