I needed strong ties for gardening. They are strong enough to tie my PVC tunnel tubes together to cover rows. I've also used some of these for bundling computer cables and other power cords. They're a bit pricey, but you get strong ties.
50Pcs Adhesive Cable Clips, Cord Holder Wire Management For Car, Office And Home (Black)
42 Review
Leather Cable Straps - Organizers For USB, Headphone Wires | Cord Management Solution | 2 Sizes, 5 Colors | Gydandir
26 Review
Heavy Duty 8 Inch Nylon Self-Locking Cable Zip Ties - 100 Pack In Black
52 Review
2-Pack 16In Under Desk Cable Management Tray - Metal Wire Mesh Holder For Desks, Offices & Kitchens (White)
31 Review