I'm a Canadian guy who's been living and working in the Czech Republic since 2004.
I live in Brno, the Czech Republic's second largest city. It's in the south east and not far from the country's wine growing region.
When I'm not working; I enjoy visiting museums, traveling around the Czech Republic, anything to do with aviation, working on my blogs, working on my Czech and swimming when I can fit it in.
I'm not too selective about the type of postcards I like, but here's a few suggestions if you're stuck for ideas:
Art, particularly the work of famous artists or folk art from your country.
Animals and plants
Holiday cards are welcome, particularly if they show a national holiday in your country
Traditional costumes and folklore of your country
With regards to tourist type postcards, all I ask is that you send a card from YOUR city, region or country. I'd rather see where you live than where you've been on holidays.
Please, NO ad cards.