The bag holder with damper helps you carry heavy objects (products, bags of things) easily, due to three springs.
The central spring works as the main one.
Side additional springs work with fast walking or heavyweight.
I made 2 options for the size of the holder for the female and male hands.
This model is printed with ABS plastic, but I recommend using more rigid plastics, such as PLA.
2 M3 screws define mainspring tension.