craftgrrl | Chinese take out boxes (Reply)

My gf and I are going to be helping out a rescue organization at an animal rescue fair at the end of April. One thing we want to do to make money for the organization is to make a bunch of homemade dog treats and sell them. I thought that chinese food take out boxes would be a nice touch to send people on their way with the goodies.

I have a pattern already from something else I did a long time ago (I made some out of album covers from all the bowls I made).

What I'm wondering is, what kind of material can I use to make them out of since it's going to hold food? I have no clue about that. Any help would be appreciated.