Do you bring your own take-out box to restaurants?

I just picked up a deconstructed gyro at a local fast good place and I remembered that last time I did it I wished I had brought my own glass container for them to fill up instead of them putting the food in styrofoam. I wonder if they would do it?

I like the green aspect, I like glass better than a petroleum product, and half the time I transfer leftovers or take-out to glass containers anyway for my husband to take to work for lunch.

Have you ever done it? Or, know someone who does?