Postcards, while travelling, are one of the very few instances when I write by hand, these days. I started about 20 years ago, I most usually only write the address and a smiley — the old school analogue medium is most of the message (that I take the time to pick a postcard, which then has to travel physically to reach the distance to its target).
where can you buy them? not at the post office, grocery store, nor the Hallmark near me. the cheap 19 cent postcard stamps also cannot be bought anymore.