The Chaos Communication Congress is all-remote again this year, and there's another [sticker exchange][] happening! In order to participate, you need to mail a stamped envelope to the Sticker Operation Center, who will put some stickers in it and mail it back to you.
There's only one tricky bit: the stamp needs of course to be a German postage stamp, and these can be hard to come by if you're not in Germany. Fortunately, you can buy a stamp online and print it out from anywhere in the world! The site is only in German, though, so here's what you need to do if you don't read German.
- Go to the [German Post Office's online postage page][internetmarke]. Interact with the cookies popup as you see fit.