These boxes are very large. They are pizza boxes from pizza kits (the kits are plastic wrapped so the boxes are very clean).
I was thrilled when I found a page layout in a coffee table map book that had a scene that matched this puzzle.
This puzzle was the inspiration for the series. I've been meaning to use this puzzle on a box for a very long time. The foundation papers are from a dictionary that I've been using forever and haven't made a dent in the number of pages left in it.
I found this adorable Golden Book Illustrated Dictionary that I thought would make great box paper. I thought this retro puzzle would be cute with it. Lo and behold - hoarder of the universe even has obnoxious orange lace and brilliant teal ribbon to set of the retroesque whimsy.