Unfortunately I am unaware of any happy climbers. Your snake might be climbing to search for food/heat. A glass aquarium can work with just little modifications. First you should change the light bulb to an under tank heat mat and then you can go to your local home depot and get 2 pieces of plexi glass cut to fit under the metal screen. Just make sure and drill holes (around 6) on just one of the pieces and this will help retain the heat/humidity in the tank. Hope this helps.