Implementations of an electrical device cover may include a base unit having an electrical device aperture therein configured to accommodate a face of a first electrical device and at least one box mounting screw aperture therein. A portion of the base unit may be configured to cover a portion of the face of the first electrical device of a first electrical device type when the electrical device cover is installed over the first electrical device and may be configured to expose a face of a second electrical device of a second electrical device type different from the first electrical device type when the electrical device cover is installed over the second electrical device.