The same thing
I spend too much time looking at commons images. The images you can use and share without worrying about copyright or payment. They can improve a piece of writing and can sometimes offer an inspiration. They are generally one of the internet’s better rabbit holes, a glimpse into the past but also an alternate history, a motley collection of professional and amateur photography, strange illustrations from stranger books, carvings, engravings, lithographs, screengrabs. A world once there, a world gone, a world never known about.
Wait until next year 