treats to send to our soldiers
You might want to check the bookstore shelves for a book on Christmas or holiday baking -- of the two I own, one has a list at the back of good shippers, and the other has a storage note with almost every recipe.
Off the top of my head, Yo-Yos (like a vanilla oreo only better, and gets better every day you can resist eating them -- I think the recipe was in Cookies Unlimited) or a cookie that requires aging like Pfeffernusse or Zimtsterne, if you're in the mood to make cookies. Nancy Baggett's cookie book has lots of suggested storage dates, too.
Oh, and be careful with the storage, too -- I dropped a box of altoids into one care package, not thinking, and everything inside was minty fresh by the time it arrived two or three weeks later.