Heritage Day and Vintage Baseball Game — See how autumn was spent on a working ranch in the 1880s and at noon watch the annual vintage baseball game. Costumed volunteers demonstrate chores of the olden days and a blacksmith practices his trade making hardware for around the ranch; 10 a.m. Sunday, Sept. 29, Walker Ranch Homestead, 7701 Flagstaff Road, Boulder; free; 303-776-8848.
Cultivating Mushrooms on Logs and Stumps — This hands-on workshop will explore how to cultivate edible mushrooms on logs and stumps, which when properly tended can be harvested for multiple years. Each participant will receive one log which they have prepared to produce Oyster mushrooms; 9 a.m. Sunday, Sept. 29, RSVP to firstname.lastname@example.org for location, Boulder; $25.
Boulder Market — Enjoy the final Boulder Market of the season where shoppers will find more than 75 local vendors stocked full of affordable visual art, high quality handmade items and unique treasures. Visitors will have the opportunity to meet and talk with artists, enjoy a live music performance, play in the park along the Boulder Creek and entertain the family; 11 a.m., Sept. 29, Central Park, 1236 Canyon Blvd., Boulder; free; 720-272-7467.
Adult Coloring — Each and every Sunday choose a coloring sheet from one of our adult coloring books, use our pencils and enjoy a glass of wine. Cost includes a glass of wine, choice of coloring sheets and pencils to work with; 1 p.m. Sunday, Sept. 29, Settembre Cellars Winery and Tasting Room, 1501 Lee Hill #16, Boulder; $12; 303-532-1892.
Harvest of Hope Pantry Volunteering — Join us in our mission to provide “hope” for those in need. We need people to assist shoppers, stock shelves, check in clients and help with the overall organization of the pantry. We’re a small grocery that provides free, healthy food; 8:30 a.m. Monday, Sept. 30, Harvest of Hope Pantry, 2960 Valmont Road, Boulder; free; 720-382-1971.
Running A Food Business — In this class, we will help demystify and simplify the process of manufacturing your products in a commercial kitchen, addressing everything from licensing and inspection to the importance of fine-tuning your production; 6 p.m. Monday, Sept. 30, Salad Ground Kitchens, 4920 Pearl St., Boulder; $45.
National Geographic Live — With a broad roster of talent including renowned photographers, scientists, authors, filmmakers and adventurers, National Geographic Live’s critically acclaimed programs have connected with audiences worldwide for over a century. This event is titled “Between River and Rim: Hiking the Grand Canyon” and will feature part-time river guide Kevin Fedarko and National Geographic photographer Pete McBride. Ages 15+ without a parent; 8 p.m. Monday, Sept. 30, Boulder Theater, 2032 14th St., Boulder; $22.50-$25.