I definitely picked up thriftiness from my grandmother (Eleanor). I would watch her reuse stamps by washing or steaming the envelope, peeling the stamp off, and hanging it to dry on a ghetto-ass laundry line made of thread and held up with a paper clip.
Back in the day — before texting and emailing — we would get letters from her, and if you looked closer, it would be the same stamp from a letter or card that my mom or I had sent her!
While it was always funny, I respected the hell out of it — even as a kid. That's because I probably knew, even back then, that I'd end up being just as thrifty. For example, socks and underwear must have holes in them before they can be thrown out.