Combination of fruits a and nuts will help you to boost your energy. Cinnamon not only add flavor and aroma but is also a good-old-remedy for stabilizing blood sugar level.
1 apple, sliced (you can use apple cutter)
1/2 tea spoon of cinnamon
2 tea spoons of ground flax seeds
1 table spoon of your favorite berries (fresh or frozen)
1table spoon of almond butter
Preparation - will take you 3-5 min to make it and pack in a tapper ware or simple plastic container
Slice an apple, place apple slices and almond butter in container, sprinkle with cinnamon and ground flax seeds, put berries on a top
Enjoy at 3pm or any other time when you need to boost your energy!