This is a well established live potted Cissus Discolour Rex, Vine Begonia plant.
(sold on ebay as just a leaf cutting for £14)
It comes in a small terracotta clay pot, which are best for growing plants.
It is in its own plant pod, nothing the soil,  which can easily be carefully pulled out for transplant ing into the enclosure.
Its loves light, and humidity,  and is a fast growing vining plant.
It has beautiful deep purple underside to its leaves, with and almost silver markings on the front of the leaves.
As its a fast growing vine, it will need to be cut back occasionally especially around vents, or you can simply pull off leaves where you dont want them.
To stop height growth, simply cut of the leading shoots, bit this will encourage more side growth,  which will also need to be cut back.
The last  picture shown is of one i have grown across shelving, as it also makes a fabulous addition  when left wild, to any spider room with good light.