We need a better selection of stamps.

I just put a Hawkman stamp on a sorry-your-mom-died card. It doesn't seem right.
But then again, I'm already tardy in sending it, and if I waited until I got some more-appropriate stamps, the letter would be even later.
I could have used some old stamps of lower denomination, but a regular card littered with a variety of stamps probably looks stranger than a lesser-known crimefighter.
I could have used Wonder Woman for a female theme, but that felt even more wrong.
Why not the Green Arrow, or Superman? I thought Hawkman's yellow background would blend better on the yellow envelope. I'm doing my best with the materials I have. I just have to get better materials.