Oooh, this one turned out nice!

#solargraphy image:
This is the course of the sun over the last 6 months in Lilienthal, close to Bremen, Germany. The picture was taken with a can (with a tiny hole) and photo paper.

@moritz was the photopaper in the can?
@eliza_coli yes! This is how it works: https://www.instructables.com/Solargraphy/ (I use screw top cans though for reusability..)
Solargraphy

Solargraphy: Solargraphy is the art of long exposure photography that captures of the image of the sun moving across the sky.  These exposures can last days, months, even years. This Instructable will show you one design for solargraphy pinhole cameras. &nb…

Instructables
@moritz That's amazing - I got given socks in a can that would be perfect for this. Thank you so much!