I'm just starting out with 3D printing and this is the first upgrade I've designed.
I'm brand new to CAD as well so I'm sure there's lots room for improvement.
But this prints quick and seems to relieve the stress from the connector wires.
This just snaps on to the hotbed connector. Add a ziptie and you'r good to go!
(sorry about the crappy photos. black PLA just doesn't photograph well)