BLUE TONGUE SKINKS

Considering making a wooden platform/hide/climbing thing for my bts, likely out of just wood and some tight string or something, are there any common woods that are toxic? Im thinking of using bamboo- and can't find much info on if that's bad.
I know cedar n pine are bad but what others? Any suggestions?

I’m pretty sure bamboo is fine. It’s used sometimes in enclosures made by companies.