Customisable Rod Holder

This customisable rod holder can be used for any variety of things, and is designed to protect the surface below from direct contact with the screws. It uses a friction connection to clamp in place.
I designed it to hold a rod which supports a hanging mobile above my baby's bassinet. It's a nice bassinet, so naturally I didn't want to damage the wood by screwing onto it. This was the inspiration for the thin, flexible wall which applies pressure to the wooden post that the rod is clamped to, w