Many of us have people in our lives whose kitchens are seemingly stocked with every appliance under the sun.And those kinds of stocked kitchens can make for a difficult holiday shopping experience.Luckily, Amazon put four not-so-typical Ninja appliances on sale for up to 38% off:.Ninja Foodi 5-in-1 Indoor Electric Countertop Grill, $180 (originally $230).Ninja Foodi Smart XL 6-in-1 Indoor Grill, $230 (originally $280).Ninja ProfessionalCountertop Blender, $80 (originally $100).Ninja Air Fryer, $80 (originally $130)