A simple open frame to hold a circular hygrometer. Mine had a diameter of 41mm and two tabs at 30 degrees had a width of 6mm. Check your measurements, they may be bigger then they won't fit. Update attached files if yours are bigger. There are many similar designs on Makerworld.

The step model of a humidity sensor is by György Pelle from GrabCAD but I couldn't use it because the dimensions were biggger and my sensor fit would be very sloppy. Looks good in the picture though.

The frame width is set to 47.5mm to fit into the AMS middle slot.

I used desiccant containers by MortalWombat at printables because it uses vase mode which prints in less time, has good air circulation around it and fits easily into the spaces in the AMS. The hygrometer can fit in the same slot with a desiccant holder.

The weak points have been addressed (they break off at the bend where layer adhesion reduces the strength, I added a fillet and a supporting web)

Print face down.