Not very inventive either but: Any and all nuts and fruit and seeds, in whatever combinations you like. Crackers or rice cakes and cheese cubes. Or hard-boiled eggs. A small jar of nut butter. Carrot sticks, pepper strips, cucumber strips, radishes, etc, with a small container of hummus, or whatever other dips you like. Fruit of course (bananas, oranges, tangerines, apples, pears, and even things like berries in a plastic container). Home made granola to cut down on oils and sweeteners. Turkey jerkey or other dried meat for those who eat it. Small containers of Spirutein or yogurt or kefir. Leftovers from dinner. Half a sandwich. A pancake with some peanut butter inside, all rolled up.