Adam, K6ARK has designed an ultra-compact matching unit kit for portable Ham radio operation. One of his winder design ( https://www.thingiverse.com/thing:5385215 ) integrates a clip for a Male BNC connector.
Seeing that, I designed an antenna winder that has a clip for a Female BNC connector.
You can buy the kit and see the build instructions here: https://k6ark.com/
I also have designs for parts of a telescoping fishing pole mast and a 20 AWG loading coil if you want to make a 40 meter EFHW antenna: (link TBA)
The author hasn't provided the model origin yet.