Disclosed, among other things, are ways to allow air to circulate under a plant pot or other object that may otherwise cause stains or rotting on a surface such as a deck or a hard surface floor. In one embodiment, height-adjustable wedges slip into inter-board spaces on a deck. A plant pot or other object is placed on the wedges and adjustable surfaces allow leveling of the plant pot. In another embodiment, a height-adjustable block may be placed on a hard surface to prevent damage to the object or the hard surface.
