So now the entries are closed here are the four idea/themes I had come up with:
1 The classic, a figure in a wide open pristine landscape.
2 Another classic, a spaceship approching a new planet.
3 Slightly more off the wall, a kid standing at the entance to a toy shop, games arcade, themepark.
4 A simple depiction of a book that will take you to another world eg Harry Potter, Gullivers travels, His Dark Materials etc.
Wish I had remembered the Narnia books!
Thanks to all who competed.
I can claim to have almost come up with your idea number 3 
I had the idea of a child discovering a green playground with shiny, brightly colored, brand new playground equipment in the middle of a grey-dirty high-rise settlement full of concrete and asphalt - alternatively in the middle of a clearing in a forest.
A second idea was a notebook on which a screenshot with the download of the just released Blender 5.2 can be seen. With great features like real-time cycles, real caustics, etc. etc.
But due to a lack of time this weekend, it just became the “cheap” and easy-to-make Geonodes gimmick
Really a lot and very good contributions this time. I’m surprised the votes aren’t more evenly distributed. I could hardly decide
The little green one with the selfie stick 
Thank you! 
