The first thing is to store food that is similar to your normal diet. That way you know it works with you system and you like eating it.

There are a lot of canned food possibilities. There are lots of canned veggies, soups, fruit, fish and meats.
I just saw these today at the Safeway;
http://www.bumblebee.com/products_fam.jsp?famid=10
These are chicken. I also saw tuna (of course) and salmon including steaks. http://www.bumblebee.com/products_fam.jsp?famid=2
Don't forget Spam which now has a turkey variety which is probably a bit healthier.

Bill