Abstract: In a paint can assembly adapted to be releasably attached to the rung of a ladder, a relatively wide spring-like metal or plastic strap is attached to the side of a cylindrical or cone shaped paint can body. This strap bends into a downward facing U-shape so as to slip over and tightly conform to a horizontal ladder rung having a generally rectangular cross section. In this manner, the strap snugly conforms to the external surface of the ladder rung and supports the paint can relative thereto. A resilient cord is attached to the bottom of the can body at a position generally opposite to the strap. Tension applied to this cord as the cord is stretched over the lower end of the strap operates to removably secure the paint can to the ladder rung. A removable cover is provided for the can. A disposable liner lines the can body. A resilient cover is provided to convert a ladder rung of circular cross section to a ladder rung of generally rectangular cross section.