Brands are bolstering their in-person and online interaction with customers to make this holiday shopping season less of a hassle.

For the past three years, battery brand Duracell has showcased its products through pop-up events in New York at which it invited consumers to pedal on special bikes to generate energy for the New Year's Eve celebration in Times Square. Yet the company declined to repeat that initiative this year in favor of embracing online customer outreach.

Its previous holiday ...