Don't let school lunches become as routine as a line-up of classes, surprise your kids by putting a few fun edible treats in their lunch bags. And, always make sure they are age appropriate.

• Shaped Sandwiches — Turn your child's favorite sandwich, be it peanut butter and jelly or ham and cheese into an extraordinary one using stainless steel cookie cutters to make them into hearts, stars and animals.
• Cereal Chain — String naturally colored fruit loops or Cheerios on a piece of unflavored dental floss to create a necklace or bracelet.
• Mini Quiche — There's nothing like a lil brunch for lunch, make the quiche bite-sized using mini muffin pans or the pre-made appetizer pastry cups available at most grocers.
• Scoops of Fruit — Rather than having the kids fuss with peels, pits and rinds, use a melon baller to make their favorite fruit medley.

And, for that added touch, tuck a note in wishing them luck on a test or just to say that you're hoping they are having a good day.
Source