During WGT, I visited an exhibition at the Grassi Museum für angewandte Kunst which was centered around shoes. The exhibition is called "Starker Auftritt" (= strong entrance, but in the German version there is a strong connotation of shoes). Right in the beginning of the exhibition, this was made very clear by this crazy gold statue:
The shoes were all kinds of crazy, ranging from plain cuts of leather which were wrapped around the feet with bands to shoes pinched with millions of pins or shoes to play games on.
If you happen to be in Leipzig while the exhibition is still open, I can recommend going there. It is not a large exhibition, but if you check each shoe individually, you can stay there for 1-2 hours!
I also found the perfect shoes for my 7 sins outfit, unfortunately a day late: