Halloween // Since it is a tragedy that I cannot buy a 12ft skeleton in Australia, I am thinking of making one. Help?

I’m looking for images of the joints, if you have them. I’m curious as to how the plastic one bends. Also - I’m open for discussions about building materials. I’m looking for sturdy, waterproof type materials. While I can access a welder, I think metal will end up ultimately being too heavy. Thoughts?