I thought that this issue of misting instruments was really a little ridiculous given the coatings that are now available it should be possible to make the inside of the glass permanently mist free.
This is some of what I found:
Given that this was published over 2 years ago a commercial supply of treated glass should soon be available -
https://www.polymersolutions.com/blog/polymers-help-create-fog-free-glass/This is a film that could be applied to the inside of the glass -
http://www.fsicti.com/index.php?pid=20I think this company can also provide treated plastic sheet which could be used instead of glass for the instruments.
I don't think this would be permanent enough -
https://www.akzonobel.com/colloidalsilica/application/cleaning/