Cheap, Lightweight American Souvenirs...?

I am about to send a package from America to my foreign friends and I am trying to brainstorm cheap, lightweight souvenirs that are representative of america. I have already included a many pictures and a couple of t-shirts and keychains. What else? I don't want to send a big box (because it is very expensive!) but I also want it to be special and meaningful for people who are not American. Thanks!