A Smart Gadget Gift: Waterpik Sonic-Fusion 2.0 Professional Flossing Toothbrush If you want a darker shade, opt for the Waterpik Sonic-Fusion 2.0 Professional Flossing Toothbrush ($121, originally $200). It makes a great gift, too. Image Source: amazon.com Waterpik Sonic-Fusion 2.0 Professional Flossing Toothbrush $121 from amazon.com Buy Now