Small packets of meat (tuna, shrimp, salmon, clams, chicken breast) are really good.

So's anything smoked.

I found individual packets of Idahoan brand mashed potatoes recently in a great size (4 oz mix, 2 cups of mashed potatoes when done). Several flavors - really good. I add in a bit of butter or olive oil, and usually the meat or other veggies as fillers.