I know this looks like grandma’s dentures, but it’s actually a grip machine for your mouth. The makers of this product claim that, by exercising your mouth muscles with this thing 4 times a day for 3 minutes at a time, you can work your way towards a more beautiful smile. It comes in three colors and resistances: normal (for men), soft (for women), and rehabilitation (for seniors and children). It’s called Yumi, and it costs $50. Can also be used in conjunction with the rubber smile gadget.