During the first weekend of May, dozens of people filed into a River North co-working space for what was billed as a hands-on, phone-free experience.After slipping their devices into small cloth pouches stamped with the words “Fulfillment Center,” visitors made their way over to a pair of industrial shelves stacked with activity boxes labeled “make,” “play,” “read” and “write.” Inside the boxes, they found crafts, readable materials and games – …