Let's make a start here with a blog post I did back in December 2016. To quote myself:
Not making a blog post out of the results of this little call to action would have been a shame, considering the very awesome stuff that was shared, so here I present you a very first “OctoPrint around the World” community spotlight feature!
The results were indeed just wonderful to behold. You can find the post with all the pictures that were sent in at OctoPrint.org - OctoPrint around the World.