As some of you know, I write letters to people. I buy a lot of stamps because I try to really think about the people I am writing to. Who they are, their interests, what they do for a living -- things like that.
For instance, If I write an author, I use stamps featuring authors, books, subject matter that is relevant to them. Or if I write someone in politics, I choose an appropriate stamp. War hero? There are military stamps. You get the idea.
I'm going to write Stephen Hawking and Neil deGrasse Tyson and use these:
Total Eclipse of the Sun
They are so cool. A temperature change takes them from a black circle to a view of the moon. Fun!