Very interesting idea. They do have a lot of nice properties, but my concern would be that they might dry out the snake's skin. It wouldn't surprise me if they tried to eat them, either. I can come up with a number of uses for them in the enclosure, though. for example around the water dish. I've had problems with my snakes dragging substrate (or currently, the contents of the humid hide) into the water dish, but that would help prevent that at least a bit. And it could indeed help with the humidity.