If you'd like, PM me your address and I can send them each a post card from here. I'm pretty sure they have postcards. I'll have to take a ride down to Tumon, but I also think K-Mart sells them. They have and area for local kine stuff.
I'm usually the one that everyone contacts when kids are doing geography so they can get a postcard/picture. I don't mind doing it. I remember LONG, LONG ago, when I used to be penpals with people in other countries. Would love getting the letters and stamps.