hey guys i'm wanting to build a huge play gym for my birds and i'm wanting to use mainly their natural habitat and things of that nature and i was wandering if any of you guys knew where i could get the right kind of materials for building the base of the gym.

and what are some good type of materials i could use that wouldn't harm the birds. i'm gonna eventually build it where i can hang it in the corner of the ceiling, its gonna be completely built from scratch, i googled bird supplies but all i found were pre made play gyms and i don't want those, i already got two of them.

i'm sure theres GOTTA be a website out there where you can order bird materials for building a play gym like i'm talking about OR even supplies on bulding your own cage. can anyone help? thanks.