I took my Logo from an xkcd comic (
https://xkcd.com/956/). This is licensed under CC BY-NC 2.5, so I think there's no problem sharing it.
Had to rearrange some of the panels to better fit on the 600x800 format.
There is some blank space at the bottom where I've put my name on the logo copied to my pocketbook.
Regards,
Mathias