These work as you would expect zip ties to work. However, they aren't very strong, if you pull on them with pliers they will break. I used them in building a PC and there were numerous spots where I had to double them up for them to be long enough. They are however a good value; I had more than what I needed for a really low price.
Reusable Silicone Magnetic Cable Ties, 7.48'' Twist Ties For Bundling And Organizing USB Charging Cords, Fridge Magnets - 14 Pack (7 Colors) By Fironst
24 Review
Organize Your Cords With LuBanSir'S 3 Pack Extension Cord Storage Straps
27 Review
Leather Cable Straps - Organizers For USB, Headphone Wires | Cord Management Solution | 2 Sizes, 5 Colors | Gydandir
26 Review
2-Pack 16In Under Desk Cable Management Tray - Metal Wire Mesh Holder For Desks, Offices & Kitchens (White)
31 Review