$4 worth of materials. Just two drain water push caps these are 90mm 5x pixel modules. Hot glue the modules to the cap, hot glue if you had a dead module is easy to break off if required. Note how they are facing, means less soldering! You can't see it, but there is a hole in the middle, that means I can pull through the excess wire between then modules on 2 pairs. I'm going to put the second cover on it, and seal all the holes. Just a photo of it in action.