One piece includes 40 wires in multiple colors, 28AWG copper stranded wire
Available in 10cm 15cm and 20cm lengths and M-M, M-F and F-F configurations
We use these for all sorts of things around here
For through-hole DIY kits with flying wires, these can be used to simplify connections between the PCB and panel parts in place of or in addition to MTA or Molex header/socket pairs.
priced as low as $0.10 per wire (40 wires per piece)