Birdies Cofounders Bianca Gates and Marisa Sharkey Share Their Must Haves

Although Sharkey considers eight hours of sleep a true must have, her Brooklinen Mulberry Silk Pillowcase ($59) is the cherry on top. "It does feel a little bit luxurious. For that split second, you just feel like you're spoiled, you're going to have a good night's sleep, and you're being well taken care of," she says. Sharkey raves about the benefits of a silk pillowcase, including how it protects the hair from getting knotty and preserves a blow-dry, saying, "The silk just doesn't ruffle up your hair as much as a typical cotton pillowcase." This pillowcase is made from 100 percent mulberry silk, is naturally cooling and breathable, and comes in several colors. "It just feels special; you're kind of indulging yourself in something really minor, but you just feel more special than you would otherwise, especially after a long day," she says.