Building advice

[u/Silly_Storyteller]

Hello, my greek tortoise has finally grown large enough where she needs more space, and I wanted to treat her with a nice new one that I built.

I was just wondering if any of ya'll have any tips. Best kind of wood, wood sealers/stains, if bioactive is a good choice, etc. I'll include inspiration photos of what I'm aiming to make. My partner suggested finding an old dresser and just repurposing it, but I'm worried about the possibility of toxins or fumes.

Any advice is welcome! And, here is a picture of my baby girl 💚