The Bagel Dome (Dome Dome Dome) is a $40 battery powered vacuum dome made to keep bagels and other oxygen-hating perishables fresh (JUST USE A DYSON, GOD). I contacted the manufacturer and the lady on the phone said it also works for donuts but I have my doubts. Which is exactly why I just invented the Donut Dome, which isn't just a Bagel Dome with 'Doughnut Dome' scratched into the plastic EXCEPT IT IS BECAUSE I'M A GENIUS INVENTOR. I also discover elements and name them after my pets! Rutherfordium? That was me. Great dog.