In connection with the fact that I retrofitted a water system in the cabin, I made some wall mounts to be able to attach pipes in an orderly manner to the wall.
I know that you can buy such mounts but I made some that fit my needs.
The type of pipe I use is PEX pipe, 15mm in diameter. One is a little wider so that there was room to connect PEX pipe connectors as they are a little larger, the other narrow one is just to keep the pipes together where there are no pipe fittings.
I am attaching STEP files so you can change them if you need something for a different dimension. The screw hole is 4mm in diameter