Tired of flossing your teeth one at a time? Well, Unnecessary Inventions has the solution, a gadget which can floss all of your teeth at once. While it was designed as a joke, we could totally see someone selling such a device. Though we imagine reloading the floss would take way more time than just flossing normally.
Original source: https://theawesomer.com/the-jiffyflosser/638959/