Original caddy didn't fit my calipers and the hook didn't holder my bed scraper. Enlarged hole for calipers and extended the hook out a bit.
Screwdriver hole was too tight for the one that came with the printer, but I've never needed to use that screwdriver in my printing days. Kept it the same as I just put in a small file instead.
Pictured is the caliper that I had, a bit different from the original.
The author remixed this model.