1/2", 3/8", and 1/4" socket rail clips for use with Parameterized Socket Rail by spiridios. I remixed zerox12's design to allow my sockets to clip on/off a little more easily. I also chamfered or filleted several edges. These are working well for me, so far, with Craftsmen and Husky sockets.
I also designed 1/4" and 3/8" clips with additional side mounts meant to hold the relevant Husky socket wrenches. I've found 2-3 of these along the rail works well for organization purposes. The probably won't stay attached thrown in a bag, etc.
I typically increase the line width / # perimeters to fully fill the most stressed parts of the model with continuous extrusions. Just be sure there aren't gaps in those areas - see the last two (sliced) images.