As Nixit explains, the Nixit Menstrual Cup ($42) sits above the vaginal canal and under the cervix to collect fluid during your period. Because of where it's placed in the body, it doesn't require suction to stay in place, which may be appealing to someone who has an IUD. Unlike tampons, which should only be worn for up to eight hours, this period-care product can be worn for up to 12 hours. Not a bad option for nighttime, right?