Small paper theatre backdrops (and "legs" - the side panels that hide the backstage area from the audience). Since the backdrops are approx. 3-1/2" tall, they fit ATCs, too!
Yes, I do believe that is the Gingerbread House from Hansel and Gretel.
Design Team Member Laura Carson made The Shakespeare Theater Presents A Midsummer's Night Dream (see the wide photo below). More info in the blog and/or see the supply list.