And you know, on the topic of airmail letters and interesting stamps: I once bought, on Ebay, a medal given to the people who worked on cleaning up after the Chernobyl disaster in Ukraine. I was just fascinated by the envelope it came in that was made out of some kind of plastic-like food container. I think it had tomato sauce in it once. It was turned inside out and folded and stapled into an envelope, and it had airmail stamps on it. I kind of wish I'd kept it, though it also still had questionable bits of what might have once been tomato sauce in it, which is why I didn't.