I liked the original caliper holder found here: http://www.thingiverse.com/thing:640968/#files.... but it needed screw-mounting holes. So I added two counter-bored holes and thickened the side walls a bit and added radius to some corners.
The pictures show the original design on the right and my Remix on the left.
caliper_holder_final_repaired.stl | 159.9KB |