Plastic is ubiquitous, and its use is propagating a range of negative consequences. Overuse of plastic within the Phutthabucha Temple market in Bang Mod, Bangkok is harming a central community resource: the canal. Based on the needs of the community, we presented low-cost and convenient options to motivate and equip the community to reduce their plastic use. We designed a multi-phase campaign called “Let’s Reduce for Bang Mod” to inspire action through posters, so-cial media, and an incentive program. We also suggested providing reusable bags through a bag share program and eliminating the need for takeaway bags by including an eating area in the mar-ket. The provided solutions can be spread to markets throughout Thailand to positively impact the environment and human health.