These fantastic little AliExpress Thermometer and Hygrometer need some bespoke mounts. This one is designed to pinch fit a glass stand. I'm including the .step file so you can easily modify. The AliExpress part is: https://www.aliexpress.com/item/1005003695789493.html?spm=a2g0o.order_list.order_list_main.98.2df81c24v6NLcn