Diffuser with interchangeable cover

An apparatus comprising:

• a removable diffuser cover comprising one or more decorative features;
• a cavity open in a bottom surface of the removable diffuser cover, the cavity shaped to receive a full height of a diffuser down to a base of the diffuser, the diffuser comprising a diffuser housing enclosing a diffuser element that disperses a liquid into air within a diffuser chamber and a lid shaped to at least partially enclose an upper opening of the diffuser chamber, the lid comprising an inner surface sloping inward and upward away from a center of the diffuser chamber equally on all sides to form a single aperture disposed in a center of the lid such that the lid comprises a splash guard, the splash guard adapted to slow the liquid from spilling out of the diffuser chamber when the diffuser is tipped or overturned during use, wherein the splash guard includes a convex surface and the convex surface is positioned between the removable diffuser cover and the diffuser chamber such that the dispersed liquid flows between the convex surface of the splash guard and the inner surface of the lid to the single aperture of the lid;
• one or more openings in the removable diffuser cover, the one or more openings positioned to allow the dispersed liquid to pass from the single aperture of the lid of the diffuser to an exterior of the removable diffuser cover.