Hey everyone!

So I got a new digital thermometer and hygrometer that stick onto the glass in the tank. Of course the next day, the thermometer fell off. I don't want to use tape because I've heard of disasters when snakes pull it or come into contact with it, so how else do you recommend I attach them to the tank? I want to keep them lower to the floor near her hide, and I need to be able to remove them to replace the batteries when necessary. So the adhesive would need to be strong in case she rests on them, but not permanent (like epoxy). Ideas?