chi-RMW725BoxShopsRendering The shipping containers can be rented for as little as $1,000 a month.

CHICAGO—Most experts from the retail world say operators and landlords need to think creatively to respond to the advent of e-commerce. Related Midwest, a Chicago-based developer, will in June start just such an experiment. It will open “Box Shops by Related,” a pop-up container market that will feature local businesses and be anchored by Related Midwest and Equinox, a lifestyle, fitness and wellness brand affiliated with Related Cos.