Apply several coats of outdoor paint to the outside of the box. Choose a color that suits your yard, such as a deep hunter green or a dark brown. Prior to painting, clean the outside of the box thoroughly with a damp towel to improve paint adhesion.
Arrange small plants and shrubbery around the perimeter of the box using a hand shovel and bagged soil. Avoid using plants or shrubs that can grow to a height of 3 feet or taller; these may render the box inaccessible to a maintenance worker.
Stack several rows of landscaping rocks around the base of the box. Add large rocks for the first row, then medium and small rocks for any additional rows. Experiment with rocks of different colors and shapes for attractive results.
Place a decorative utility box cover over the unit. These covers, which come in a variety of sizes and designs, are typically available at home improvement stores and hardware retailers. If maintenance of the unit is required, lift the cover off for access.