How to add wiggle to a cable in blender (without add-ons or simulations) 

Your attention to detail is unmatched.

Today I learned about the Elastic easing parameters under the Active Keyframe menu, that's SO COOL. I've used it stock for quite some time but now I have even MORE artistic control!

That's really clever

Dang, even the smallest touches require deliberate effort: no wonder why the maverick series is such a masterpiece!