A period kit can be purchased online, but it’s possible to create one yourself. Dr. Maureen Baldwin, MD, MPH, OB/GYN, recommends adding a variety of items. Include pads, tampons, wipes, period underwear, extra underpants, a scented bag for soiled underpants, and a pair of black leggings. And consider adding a laminated card that says, ‘I need to go to the bathroom NOW because my period is leaking through my pants’ in your kit.