My vote goes to No. 7, nice idea and the original surprised me a lot.

I am waiting for new topic suggestions

Since we are already so good at guessing motifs, how about presenting a macro shot or a section of a picture in which the original is not so easily recognisable in the next round. The difference to the two previous rounds is that the picture or detail presented remains original, i.e. it is not altered or distorted.

Thanks for the prize!