Need a kitchen upgrade? Grab a Ninja appliance for up to $70 off.

Here are our top picks on discounted Ninja kitchen appliances as of Dec. 15: OUR TOP PICK: Ninja four-quart air fryer — save $50 BEST FOR WINTER GRILLING: Ninja Foodi AG301 5-in-1 indoor electric grill — save $50 BEST FOR SMOOTHIE LOVERS: Ninja Professional 72-ounce blender — save $20 Everyone loves a fun kitchen upgrade for Christmas, and what better brand to gift than Ninja? From air fryers to super powerful blenders, Ninja appliances put in work in the kitchen so you don't have to. Amazon has a variety of Ninja small appliances on sale as of Dec. 15, and they'd make great gifts.  Our top picks below are all in stock and will arrive before Christmas, so grab one of them for the cook in your life. If you're shopping for yourself and can afford to wait until after the holidays, there are more deals at the bottom of this post that won't be in stock until January — but you can still buy now to lock in the sale price.  Read more...More about Ninja, Mashable Shopping, Ninja Foodi, Culture, and Work Life