There are the Kudo's Snack Bars. They are only 100 calories and 3.5 grams of fat. I got a variety box of 50 at Costco for under $10. The box I bought has chocolate chip, peatnut butter, M&M's, and Snickers. They are granola bars with these things mixed in. Great for an afternoon snack or a little dessert after lunch.
Good Luck!!