The World’s Largest Diaper Drive is an annual project operated by Bottoms Up Diaper Bank during May. Bottoms Up (www.bottomsup.life) is a non-profit organization headquartered in Lancaster. The group has collected and distributed diapers to Ohio families since 2018. The organization has been assisting with diaper distribution in Defiance for the past two years. In 2024 The World’s Largest Diaper Drive collected more than one million diapers across 25 counties in Ohio.