I wrote before about my continent boxes. I've been slowing making, buying, and printing things for our boxes. Out of necessity for my own sanity, I compiled this list of Asian countries and divided them by region. I'm hoping that breaking down Asia into regions will make it more manageable and will help me to focus on gathering a wide variety of materials. You can download it here.
I also found a great free resource for world pictures- National Geographic's Picture of the Day. They're organized, but unfortunately not searchable. I've been able to grab some amazing pictures of the world, particularly Asia. Check it out!
Homeschool Creations has free flag 3-part cards.