i found hard-shelled (like m & m), chocolate-covered coffee beans called shock-a-lots. mmmmmm gooooood. satisfies two cravings at once.
one bag (approx 12 beans) = one cup of coffee - which can be rationed one at a time or, if you're in a hurry for a quick buzz, down the hatch!
for me, i've just munched one at a time while hiking.
Shock-A-Lots