Hard Boiled Blocks
Eggs are simple, portable and most importantly cheap sources of protein blocks. At less than 20 cents per block, I believe they are THE cheapest.
It sounds silly, but I finally figure out how to hard boil eggs in a way that works.
Simply put the eggs in a pot with cold water covering them about 1". Turn on the heat. When the water get to a really rolling boil, turn it down to a steady boil and set the timer for 10min.
At 10min. remove the eggs from the water and immediately put them in a large bowl of ice water. The ice water prevents the nasty green ring from forming, keeps the yolks nice and yellow and makes them very easy to peel.
A hard boiled egg, piece of string cheese, apple and a few almonds is a quick and easy 2 block snack/meal.