She's currently doing the 1000 Postcard Project where she's sending unused vintage postcards out (signup is still open, I believe). 1,000 postcards is quite the undertaking, but I'm a little in awe of the effort (and cost)!
I got my postcard in the mail last week:


In addition to the postcard, I like the interesting stamps she used. Makes me want to get more interesting stamps for when I send snail mail!
See also:
Tiny Letter (also Naomi Loves snail mail)
My snail mail-related posts