These little zip ties work so well! You can unlock and reuse them as much as you want unlike traditional zip ties. The only downside is that it has an adhesive on the back of it that you can stick under your desk to help with cable management, which works great but you won't be able to take it off and place somewhere else.
Heavy Duty 8 Inch Nylon Self-Locking Cable Zip Ties - 100 Pack In Black
52 Review
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
50Pcs Adhesive Cable Clips, Cord Holder Wire Management For Car, Office And Home (Black)
42 Review