"COMMONs MARKET KAWAGUCHI 2026 SPRING" is coming to OKS CAMPUS in Kawaguchi, Saitama on April 12, 2026 (Sunday). The event is held at a facility operated on 100% renewable energy and is free to attend, offering families a chance to explore themes of food, lifestyle, and the environment through a variety of hands-on activities. On the day, visitors can look forward to a flea market run entirely by children, organic farming workshops, a KOMBUCHA-making session led by an in-house brewer, and approximately 25 stalls from naturally cultivated produce growers and craft artists.

About COMMONs MARKET KAWAGUCHI
"COMMONs MARKET" is a community-participatory event designed to nurture the future of food, lifestyle, and the environment through enjoyable experiences.
The event carries forward the spirit of the "ARTISAN FARMERS MARKET KAWAGUCHI," which launched in April 2018, evolving into a new format more closely aligned with the mission of "filling the earth with smiles and creating wonderful environments."
The small "s" in the event name "COMMONs" carries a dual meaning: "Sustainable," signifying that today's choices lead into tomorrow's landscapes, and the plural form, expressing how each person's time weaves into the shared stories of everyone gathered.
Makers hand their craft and passion to enrich someone's everyday life. Visitors, through choosing, eating, and using, connect with the stories behind what they encounter, and in doing so, help create the next chapter. Here, people meet not merely as sellers and buyers, but as participants together shaping the same space and future.
The aim is a place where experiences don't simply end with "that was fun" — where small moments born today become someone's tomorrow and grow into shared commons for generations ahead.

Experiential Content: Nurturing the Future of Food, Lifestyle, and the Environment
"Mizuiro Market" — Selling and Buying by Kids Only!
Children take on the role of shopkeeper themselves in this reuse-focused flea market. Through hands-on customer service and pricing decisions, it serves as an experiential educational program that passes on the value of things to the next generation.

Farmers & Craft Market
A market featuring producers of naturally cultivated vegetables and dedicated craft artists — makers whose faces visitors can get to know. Items filled with each maker's passion can be purchased through direct conversation.
COMMONs EYE — A Flea Market to Sharpen Your Aesthetic Eye
OKS CAMPUS staff put up their own personally treasured belongings, each with a story, along with the episode behind them. Visitors' own sense of taste gives new life to these objects and carries on their stories — a brand-new kind of flea market.
Let's Grow Vegetables! An Organic Farming Learning Experience
A workshop held in the farm within OKS CAMPUS, where participants get their hands in the soil and learn about how organic farming works. A farming experience that lets children and adults alike feel the cycles of nature firsthand.
Learn to Make KOMBUCHA from a Brewer
The in-house brewer behind OKS's original KOMBUCHA brand "_SHIP" shares how to make KOMBUCHA at home. A workshop to discover how fermentation culture can be woven into everyday life, and to feel the connection between body and environment.
OKS CAMPUS Sustainable Tour Featuring Nationally Registered Tangible Cultural Properties
A guided tour through the behind-the-scenes of OKS CAMPUS — operated entirely on renewable energy — including the nationally registered tangible cultural properties of the "Oizumi Residence Western and Japanese Wings," as well as composting facilities and other environmentally minded features of the site.
First Parent-Child Bicycle Class
A class for children preparing for their cycling debut and their guardians. Participants learn safe practice tips and take a new step forward together as a family.
Event Details
Name: COMMONs MARKET KAWAGUCHI 2026 SPRING
Date: Sunday, April 12, 2026, 10:00 AM to 4:00 PM
Venue: OKS CAMPUS (5-4-1 Ryoke, Kawaguchi City, Saitama Prefecture)
Admission: Free (some paid content, including workshops)
Supported by: Kawaguchi Chamber of Commerce and Industry, Kawaguchi City Board of Education (planned)