My snail mail enabler Sheba told me about another great site called Swap-bot. She would prefer to be referred to as my muse but my current addiction would dictate otherwise.
Swap-bot is a wonderful online community where snail mailers like me can go to find out about swaps and participate in sending and receiving mail from strangers around the world. There is usually some sort of creative/arts and crafts/design aspect to each swap.
I joined a swap called "Mail Me a Decorated Envie." It was a little tricky to figure out how everything works on the site, but I finally figured it out. This is an international swap where you decorate an envelope for a stranger with a short letter enclosed. I was lucky enough to be able to send my first swap item to sunshinesuperman in Kansas.
Here's the front of my decorated envie.
And here's the back.