Dyson HP01 Hot and Cool Purifier Air Purifier and Fan Silver This multifunctional Dyson HP01 Hot and Cool Purifier Air Purifier and Fan Silver ($375, originally $500) is always a good investment. The heater and fan options are great for every season of the year and it even works as an air purifier. Image Source: target.com Dyson HP01 Hot and Cool Purifier Air Purifier and Fan Silver $375 from target.com Buy Now