Those are all good ideas. I'm particularly fond of tins of sardines and hard-boiled eggs. Eggs are just about the perfect food.
While you can't get all your protein from seeds/nuts without going too high in terms of fat, a 1oz serving of, say, almonds, is great. And even better? Dried edamame -- a 30g serving is 140 calories and 14g of protein. Fat and carbs are low. Just stick 'em in a ziplock bag and munch.
"Habe nun, ach! Philosophie, Juristerei und Medizin, Und leider auch Theologie Durchaus studiert ..." (Goethe, "Faust")
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