Safe woods?

[FallenRabbit]

What are some safe woods that are OK for rabbits to be around. I was thinking of making a small rabbit shed. I was thinking plywood on all the sides (4 sides plus the top and the bottom). The bottom would have tile stuck to it so it would be easy to clean. The 4 sides of plywood would have waterproof wood nailed to it. The top would also be waterproof and there would be a tarp on top for extra shade. I would like to make it like this. Toward the top of the shed I would like to put fans for air circulation and to make the shed more cool. It is beginning to cool down where I am living right now. It is mostly cloudy, right now it is in the 80's so it isn't that bad. No sun either.
I like this shed:
[ame]http://www.youtube.com/watch?v=7KDiAx5Jd4M[/ame]
But all around the shed and run will be smaller (to fit one rabbit).

I like the OUTSIDE look of this shed:
[ame]http://www.youtube.com/watch?v=tyZDt9XEtkc[/ame]
It would allow for more air flow.

What do you think?

 

[FallenRabbit]

I would also like to include that the shed/hutch will be 4 feet tall, 3 feet deep, and 4 feet long. I would like to make it taller but a tree branch is in the way so I can't do that. I planned to make it longer but in the end I figured that it would be better that the shed is in SHADE ALL DAY and be a little smaller than for it to be a hotter inside the shed. Right?

Anyways Ive been making plans/drawing quick photos in case anyone would like to see them for a better image.