Ooh, this has been dead for a while, but its revival is timely.
I'm traveling, on per diem ($46 tax-free on top of normal pay), and my first two meals today cost me about fifty cents. WOOOO
On Friday, my last regular workday at home, I packed all my frozen work lunches in an insulated grocery bag. I kept them frozen at my weekend stop, and they were still good by Monday night when I hit my hotel for the next 2 weeks. I also picked up a couple boxes of granola bars to add to the free ones my Kellogg's distributor neighbor gave me, to keep restaurant meals to a minimum this week. Compared to the likely alternatives, that's $100-150 saved.
They have a hearty free breakfast - eggs, home fries, bacon, sausage, cereal, milk, pastries, juice, coffee, etc - so I wasn't even that hungry at lunch. I went back to walk the dogs and ate half of a pasta dish, and froze it again.