About time for an update on this, well let's post some nurdy stuff right now:
If you are into database development, this is the sheet that explains all the basics (done by me for databases exam):
Had a good time thinking about this one, it's a pseudocode algorithm for a microcontroller based control system for a modell train track (uni work, sry for quality):
Worked on this for several hours until 2am in the morning, built it the next day irl, worked perfectly. It's the circuit plan for a gantry crane control:
And for the art stuff: Here's a very old graffity (no advert intended):
Also some of the more 'recent' stuff (like 2-3 years old):