Molly Sims's Must Haves: From a Portable Charger to a Béis Travel Case

Sims says that she "swears by magnesium" for a variety of health benefits, but especially for better sleep — and calls this Moon Juice Magnesi-Om ($8) a nighttime essential. "Every night — about 30 minutes before I go to bed — I stir in one teaspoon of this powder into my water. Not only is it delicious tasting, but it helps calm and relax me so I can get a good night's sleep," Sims says.

Pro Tip: Per the brand, this pink drink is infused with ingredients that help to improve brain function, reduce muscle aches, and calm the body. Simply sprinkle a teaspoon of the powder into a glass of water, stir, sit back, and enjoy.