Vitagoods Fitmix Portable Mixer Bottle This Vitagoods Fitmix Portable Mixer Bottle ($40) is genius. Have your smoothie or protein shake on the go, whenever you want; it's even got a designated powder cup, so the powder only mixes with liquid when you want it to. Plus, you can charge it with a USB cord. Image Source: freepeople.com Vitagoods Fitmix Portable Mixer Bottle $40 from freepeople.com Buy Now