I'm a middle school (grade 8) teacher in Colorado, USA, and teach US History.
I'm an avid fan of Star Wars, and heavy metal music.
I prefer any type of postcard, but love:
*Amazing anomalies of nature (such as "Everything is bigger in Texas, etc.)
*Old photographic cards
*Unique landmarks - both man-made and natural
*Historical themed cards
However, I will be very happy with all types of postcards.
Feel free to write in your native language, but please also write translations if you do so.