Office Depot, a leading provider of office products and services, will celebrate the grand opening of its first Bangor store at 2 p.m. Dec. 8, at its 482 Stillwater Ave. location. City Manager Edward A. Barrett will speak at a ribbon-cutting ceremony. The Bangor store is managed by Kevin Robinson and employs about 25 full- and part-time personnel. To celebrate the opening, Office Depot will donate $500 each to Spruce Run, Wings for Children and Community Health and Counseling Services. Also, 80 backpacks with basic school supplies will be provided to Big Brothers Big Sisters of Eastern Maine.