Sargento ultra thin cheese. In my opinion these are the best cheese slices, they are full of that great flavor but thin so you still have a lower calorie cheese slice.
My second addition would be cereal
Yes crackers are buttery and delicious, but we are really just looking for that crunch! Cereal is fortified and usually has air pockets so you feel like you are getting a lot more crunch for your cal.
1 slice of ultra thin colby jack and a 1/2 cup crispix = 95 calories