as long as you meet all the requirements of the animal then you should be all sweet the only problem i can see you might have is ventilation.. There was a enclosure made from a tv that was for sale a while back looked good. what are you thinking of putting in it?
Was popular for a while to turn them into fish tanks. I think the old timber tv's, which are getting harder to find these days, would look great as an enclosure for smaller snakes or maybe some elapids.