Best Buy Deals: Batteries to Ninja Duos Posted on September 18, 2018 by The Goddess deranged.me posts may contain affiliate links; I will be compensated if you make a purchase after clicking that link. See disclosure policy under The Legal Stuff. You can check out the Dyson stick vacuum that’s the Best Buy Deal of the Day or any of the Bonus Deals, like a ceramic electric hairbrush or Ninja Blender Duo, that are way more fun!