In my opinion, here is one of the most unique and fun Superman comics to come out of the 1990s.
Superman: The Man of Steel number 30 allowed the reader the ability to create their own scene. The issue came in a mylar bag that also contained a sheet of various vinyl clings that any reader could place on the front or the back cover. The cool thing about it is that they were not stickers. You could change the scene over and over again… as many times as you wished.
The issue was written by Louise Simonson, pencilled by Jon Bogdanove and inked by Dennis Janke.
Here is a view of the back.