Yes, I would amagine that the Girl Scout cookies are hard to find in the off season.
The biggest request I get are oreo's (they come in several varities) and chocolate chip cookies by Chip Ahoy.
Another good idea for a cookie package is just a plain cookie or waffer. I also add a jar (plastic) of a good peanut butter (I like the Reese's brand), a plastic jar of marshmello cream, and a small jar of Betty Crocker frosting made with real hershey chocolate. (the hot weather is so hard on chocolate if its not in a container). Be sure to add plastic tableware for spreading. If I still have room in the box I will sneak in a squeeze bottle of jelly or jam. Bama and Smuckers are the ones I find in plastic squeeze bottles. I get alot of thank you mail for this package.
I almost forgot that sometimes I will add a package of white or wheat tortillas since bread is sometimes hard to send.