I'm trying to decide on what to pack for a travel bag. One of the main tricks to staying on a diet when traveling is to not get too hungry. That isn't so difficult.
I can take slim jims, almonds, babybels, and Atkins bars. I can also take Vienna sausages. I think maybe a jar of peanut butter is a good idea, too. Crystal Light packets and a case of bottled water works, too, since I'm not going to be walking and carrying the bag.
I used to make tuna sandwiches using butter instead of mayonnaise to protect the bread. Then I just put the sandwiches back in the bread bag. I could take tuna salad and pork skins.