A convertible bed bumper apparatus includes first and second elongate members each including a flat side extending between opposing first and second flat ends; a first fastening element at the first flat end of the first elongate member and a second fastening element at the first flat end of the second elongate member; the first and second elongate members being integrally joined together adjacent the respective flat sides of the respective first flat ends; the first and second elongate members being selectively operable between a stowed configuration, wherein the respective flat sides of the first and second elongate members are brought into congruent abutment, and an operational configuration, wherein the respective first flat ends of the first and second elongate members are brought into congruent abutment; the first and second fastening elements being sized and configured for engagement when the first and second elongate members are in the operational configuration.