Need some advise

you can also get tuna and chicken salad packs  with mayo and relish and all ready to mix up and eat. throw the crackers out the window on the ground FIRST THING so they won't be an issue to keep from eating them.

Many large grocery stores now carry boiled eggs in a pack of six in the deli section. those would work.

Different lunch meats...roast beef salami,turkey etc are excellent choices and don't take up much space.