Build This Wire Twisting Tool! It's simple and useful for ribbon cables - YouTube
Strainrite Wire Twister Tool for Twisting or Tying off Wires Farm Stoc – RGH Supplies LTD
Wire Twisting Tools, Electrical Wire Stripper and Twister, 4 Square 3 Way/ 5 Way Twister Wire for Power Drill Drivers and stripping wire cable (2, Blue and Orange) : Amazon.co.uk: DIY & Tools
1-3pcs 6mm Hexagonal Wire Twisting Tools Handle Electrician 1.5-6 Square 2-6 Way Twister Wire for Power Drill Drivers Twister - AliExpress