According to the Top 7, we need to select a CAPTCHA image.
So please submit your proposals as answers to this question.
Note: I originally posted this on Ubuntu S.E., but it seemed like it was too 'geeky' for them because Ubuntu targets people just getting started with Linux.
Here is a little something I started with the model I got here:
Note: I used Blender on Linux to create this, so it fits quite well :)
Maybe we can put a funny phrase on the sign like "Penguins Only" or something... ideas are welcome.