Greetings which I hope make it past the remove greetings bot ;)
I added the IoT.SE community promotion ad used in years past at https://raspberrypi.stackexchange.com/ to the new (2019) selection page there; they must be renewed annually.
That one is pretty good, but if anyone thinks they have a better one, post it here and I will replace it (rather than having competing ads for the same site). Be sure you understand the requirements for the image first, they are in the question on the RPi Meta page linked above.
Also, if you are a voting member at RPi.SE, please upvote the ad, since they must reach a threshold in order to appear. The specific "answer" is here.