FUZZYWICKETSpepperoni would be a great one to take back. pepperoni in poland simply isn't pepperoni, it's salami making a valiant effort to taste like pepperoni.
This!!!!! I came back with five bags of the sliced pepperoni for this purpose this past November. I also picked up a handful of the packages of Propel powder for mixing. Love these for during my runs.
Mac & Cheese is great with some ham cubes (or pepperoni) and some tomatoes thrown in.
I grabbed jelly beans and MilkyWays while I was there, oh and some handfuls of sauce packets from Taco Bell. Since I can't eat that crap while i'm here I at least have the sauce to go with my tacos!