Kashi steam-in-the-bag meals. Yes, plastic in the microwave isn't good for you but it's not horrible either. I also cook a lot of roasts and stews at home, vacuum seal the leftovers in 2 cup servings and freeze them. If you stuff your eBag with frozen stuff it will stay frozen longer. Always ask the front desk for a fridge and they'll either move you to another room or bring one to you.

I open the vacuum deals and the Kashi meal with a letter opener. I also carry a collapsible bowl and two camping Sporks