Hum by Colgate Electric Toothbrush First things first — you'll need a toothbrush! The pastel-coloured Hum by Colgate Electric Toothbrush ($59) is as high-tech as it is aesthetically pleasing. It uses bluetooth and an app to guide you to brush better, and has three different vibration modes. Plus, it's on sale on Amazon right now. Image Source: amazon.com Hum by Colgate Electric Toothbrush $59 from amazon.com Buy Now