Just an idea, but I really love the cardboard standees in the lobby, as well as the vintage movie posters of the featured movies outside the entrance.
Maybe add a storage archive room to the Theater where we can browse the poster art for movies featured on the series (whether we own that specific episode or not), previous months’ lobby standees, and maybe even the great artwork that was used in the DVD releases for each episode with the bots.
Also, for what its worth, if you want to add a physical gift shop to the theater down the line, I’d totally pay a few bucks for a miniature (6" or smaller) lobby standee of some of the movies/events (like the current Manos one) to put on my desk.