Gosh! I can think of many things, but will try to keep it practical here. I once took a train in Russia from Moscow to St. Petersburg. Myself and a friend decided to make a party of the event, and we kinda went wild with fruit, pates, cheeses, crackers, cookies, wines, caviar, and even a bottle of vodka. We made it a huge grazing event, and even opened our room to the rest of the car.....but, you are doing a family thing! Besides, in Russia visiting a dining/drinking car can get you into BIG TIME trouble, and our car actually had security guards at each end to prevent us from leaving.......as well as to keep drunken locals from getting to us.
Anyways......
-Fruit (oranges, apples, bananas, pears)
-Individual serving fruit cups
-Nuts
-Muffins
-Small jams/jellies (you can likely purchase a few from your fave
restaurant, they may even give them to you)
-Mustard/mayo/honey packets
-Crackers/bread rounds or squares
-Tins of sardines, octopus, even tuna or chicken in packets
-Beenie Weenies (for the toddler, and they're pretty decent at room temp)
-Granola (for munching or topping off your yogurt)
-Oreo Minis (small plastic cups a the $ store)
-Ritz Bits (small plastic cups at the $ store)
-Cheeses (small individual ones, or a small pre-
packaged "chunk"...enough to be consumed in one meal)
-Pesto (small tube from the grocery store)
-Anchovy paste (small tube from the grocery store)
-Raisins (the small boxes)
-Dry cereal (your fave, or the toddlers fave, for munching)
-Small summer sausage
-Pepperoni (small package)
-Miniature candies
-Small amount of deli meat (very flat, and should fit easily in the cooler)
-Small jar of olives/pimiento
-
Picnic Bread (From South Africa) (one of my favorites on Food.com, and I "don't leave home
without it"
Hope this will at least give you some options/variety!
Suggestions: Plastic storage bags can be your best friend when travelling....with some items above, you can just take along the amount that you'll need, not the whole box/package. You might even get an entire meal into a gallon bag for convenience They are also good for disposing of things that might smell after a few hours in your garbage can. Also take some disposable utensils,paring knife, small paper plates, napkins/paper towels/wet wipes.
Make your trip fun! Be creative!