Hi, if you have your filaments stored in a plastic box (for example from IKEA) I have prepared a holder for a thermometer and hygrometer. Just cut a hole in the box, glue the holder on and put the hygrometer in - no need to glue, it fits perfectly.

Make sure to rotate it correctly, there are holes in the holder for the sensors.

You can buy the hygrometer here: https://www.aliexpress.com/item/1005005325212100.html?spm=a2g0o.order_list.order_list_main.117.7e741802jPptSo

I think the bracket could fit other types as well.

P.S. Be more skilled at cutting holes than I am. Unfortunately for me the box cracked and I had to glue it 🙈

Enjoy printing, thanks 🙏