polypropylene vs polyethylene or melamine- which is the best material for display enclosures? I need something that will hold heat extremely well. I used to use melamine and sterilite tubs for my racks but I have downsized my collection to four ball pythons and no longer need the rack. I've seen some nice arboreal display cases but I get the feeling my snakes will probably sit at the bottom of the cage 90% of the time. I'm trying to build a display/cage setting that will look nice next to bookshelves and want to limit my long term costs basically trying to make a little library area that showcases the snakes with bookshelves near or around the cages