Meet Polly Verity: paper sculptor. Printing playable, paper-based pianos. An exhibition of artistic toilet paper holders. New technology can detect and warn of bacterial contamination from inside a milk container. Introducing the Journal of Universal Rejection. Graphene-based batteries headed for the EV market. Attempting to use an artificial arm to fake vaccination. William Bullock, the ill-fated inventor of the web rotary press. The FBI suspected the inventor of the Tickle Me Elmo doll of being the Unabomber. How to prove the safety of the Brooklyn Bridge? A terrifying nutcracker powered by an explosive piston. “Terry’s Chocolate Orange Mayonnaise,” for some reason. All that and more in WhatTheyThink’s weekly miscellany.