I wanted to have a humidity/temperature gauge mounted in my dryboxes. I made one that uses a M3 screw and nut to mount the gauge on the inside of a drybox. The gauge can easily be inserted or replaced. It fits the typical gauge provided by Prusa.
Amazon also has the gauges that fit. https://www.amazon.com/gp/product/B08M3P74N3/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
The author marked this model as their own original creation.