This is a simple mod for the Creality CR-10S. It allows the standard feet to be replaced by these holders which hold standard squash balls. The idea is that the balls help cushion the vibrations. I noticed my layers were less visible after installing them on my printer.
It uses the standard feet holes and screws. So no new holes will need to be drilled.
I have not tested whether these would fit a standard CR-10. I would be happy to edit this design for the CR-10 if I get sent the dimensions.
I printed at the settings above. Different layer heights could be used. However, I do recommend at least using 35% infill to maintain the designs' strength.