Modeled in Fusion 360, face down, no need support.
It has two “buttons” that will fit the left 2 holes at the back, so it stays in place.
Angled up a little so you can look in from the top glass.
The last firmware update allows you to use your X1 as the most expensive filament dryer lol
this could be useful :)
attached are the step file if you want to tinker with it, and the BambuStudio 3MF
The Hygrometer link from amazon:
Update 10/8/2023 : I added a version (STEP File) that panned 15 degrees left
Red Original, Green alternate version