We went on vacation for a week. When we came back, we discovered this in the bathroom. It’s the first time in my life I’ve ever seen something like this, and I honestly have absolutely no idea what it is. Does anyone know what this could be? Check the first comment for the answer

A family’s excitement about returning home after a week away quickly turned into confusion when they discovered a strange object attached to a bathroom wall. At first glance, it appeared to be a folded piece of textured paper carefully fixed into the corner where two walls met. Because it had not been there before they left, the unusual structure immediately attracted attention. What should have been a normal homecoming soon became an unexpected mystery.