http://www.repti-racks.com/index.html

These guys have some great lightweight enclosures...

I'm actually waiting for my GTP enclosure, but I guess they have a lot of orders so they have some bad turn aroud time at the moment...
But from what I've read they have good quality enclosures!
They told me 6 weeks, so I think I have two more left! I can't wait...

Not really sure what they are made from but it looks something like you have your Morelia Spilota in...

I also heard "melamine" (counter top) is good for high humidity enclosures!?!?