 I visit the campus library and find physical copies of my parents' PhD dissertations. My mom's is titled Formation and Characterization of Anchored Polymer Coatings on Alumina. There's a Cheetos bag sandwiched between the front cover and first page. No idea why. I ask my mom about this later. Did you leave a Cheetos bag in your dissertation? Maybe as some sort of message to future readers? She's like, what? No.