Back when I was in high school, friends of mine and I would send each other letters for no particular reason other than to scam the post. (I probably shouldn't admit to this here)
We would write a note, seal it in an envelope, address it to ourselves with the return address reflecting where we wanted it to go, and drop it in the box with no stamp. A few days later the letter would show up labeled "Return to Sender/ Insufficient Postage".
Done and done.
I'm noticing a lot of my bills are coming with the self-addressed enveloped self-addressed in both the To: spot and the From: spot and you have no idea how tempted I am just to drop it in the box stampless and see if my bill gets paid on time. But now I have a soft spot for the US Mail (mostly a fascination of the inner-workings of it. How the heck do they do it? No matter how illegible the handwriting, it seems to end up in the right place in a reasonable amount of days. I guess it's like pharmacists. No matter how scrawly the script, it seems there is a shortage of drug mix-ups and confusion.) and I try to post as much as I can. Within reason. I pay most of my bills online or with autopay. I've neglected to send Christmas cards for a couple years. I am so far removed from writing letters that I hardly check my email anymore. Did you know that email is a dying thing? I didn't believe it until two interns at two separate agencies laughed at me when I asked them for their email in the past year. One said "um, yeah. My MOM does email. I don't have that. Gross.". So I guess I don't post as much as I can. But I never use UPS or Fed Ex if I'm sending something out. And I always request that anything sent to me at my house is done through the US Mail. I don't buy those Forever Stamps, even though I accidentally did this time because I wanted the cherry blossom ones and those are Forevers. I feel guilty.
Did you know that Philadelphia has amazing cherry blossoms? We don't get a stamp or anything, dammit. DC steals our thunder. We also have incredible azaleas and hydrangeas that are out of this world. We originally got the cherry trees as a gift from Japan, but they grow so well now that the city plants them all over the place. And I'm not sure about the azaleas, but we do have an azalea garden that I've been meaning to get too. Hydrangeas, I hear, are dependent on the acidity of the soil they grow in. I'm not sure if that is true but the hydrangeas that grow in some of the worst neighborhoods in this town blow away anything that I've ever seen anywhere else. The colors are stunning and the bushes grow a story tall in abandoned lots, blooming from spring to fall.
Put that on a stamp and suck it.