CableMod has a 20% off sale going on for Black Friday. Seems to be site-wide. I use their ModFlex custom colored PSU cables, fan cables, and I/O cables and they're great quality for anyone looking to add a little extra flair to their custom builds.
Coupon Code: happy20
Global Store: https://store.cablemod.com/
EU Store: https://eustore.cablemod.com/
Configurator Page: https://store.cablemod.com/configurator/