A Minion-themed baby carrier. A sandworm bucket that looks a little too NSFW. A “Burn Book” tin that many online joked would be a perfect storage box for illicit goods.

Collectible, movie-themed popcorn buckets are having a moment, embracing strange designs that have drawn attention online and creating something of a competition to come out with ever more creative or absurd containers.

The buckets come as theaters continue to try new ways to convince people to leave the comfort of their…