Open Studios Tour Opening Reception — The reception for the Boulder Open Studios Tour is an opportunity to meet the artists and to view work from each of the artists participating in the Tour; 6 p.m. Friday, Oct. 4, Nalanda Campus of Naropa University, 6287 Arapahoe Ave., Boulder; free; 303-748-9132.
The Future of Startups — Startups are increasingly looked to as the future of the economy, but their founders, their investors, and the people they chiefly serve often represent a narrow, privileged minority. Mara Zepeda is working to change that. As CEO of her own startup, Switchboard, and co-founder of the Zebras Unite network, she is opening the doors of startup finance and culture to a much broader range of founders and communities. Come for an open conversation on how to foster truly inclusive entrepreneurship. Coffee and snacks provided; 3 p.m. Friday, Oct. 4, University of Colorado Boulder, Regent Drive at Broadway, Boulder; free; 303-492-1411.
First Friday Food Lab: Halloween Candy — Do you have a discerning palate? Or just like to eat? Either way, join us at First Friday Food Lab to try out new flavors. Good, gross, or in between — vote for favorite; 4 p.m. Friday, Oct. 4, George Reynolds Branch, 3595 Table Mesa Drive, Boulder; free; 303-441-3100.
Mosaic Exhibition “Origins” opening reception — Colorado Mosaic Artists presents their autumn exhibition “Origins” at First Congregational Church through Nov. 30. The exhibit includes more than 70 mosaics from 20 artists including an art piece from a CMA guest Dianne Sonnenberg; 4 p.m. Friday, Oct. 4, First Congregational Church, 1128 Pine St., Boulder; free.
Friday Art Night: Fall Cornucopia — Enjoy the abundance of fall and take home a canvas inspired by the food of the season. Working with color and shape, we will build a cornucopia of our own during this paint night. A perfect painting to hang in a kitchen or entry this fall; 6 p.m. Friday, Oct. 4, Tinker Art Studio, 693B S. Broadway, Boulder.
Whaaat!? Festival for Experimental Games and Interactions — Whaaat!? is a games festival for weird, new games; old, dusty games; games for outsiders; overlooked gems; games with bizarre controllers; games that are in art museums; and games that will start an argument between friends. It will also feature keynote speakers, workshops and panels; 9 a.m. Saturday, Oct. 5, ATLAS Institute at CU Boulder, 1125 18th St., Boulder; free; 917-565-7071.
Handmade in Colorado Expo — The Handmade in Colorado Expo is a showcase of some of Colorado’s Best Handmade arts, crafts, food and goods. All merchandise displayed at this juried show is handmade in Colorado and sold direct by the artist or crafter; 9 a.m. Saturday, Oct. 5, Central Park, 1236 Canyon Blvd., Boulder; free; 720-272-7467.
What to do When — This class will answer those oft-asked gardening questions such as: when to prune roses, start tomato seeds, seed grass, put down sod, cut back ornamental grasses, prune lilacs and clematis, apply soil microbes, when to fertilize, transplant perennials, divide iris, etc.; 10 a.m. Saturday, Oct. 5, Harlequin’s Gardens, 4795 N. 26th St., Boulder; $30; 303-939-9403.