A painting supplies storage device that prevents drying and settling of paint includes a container, which has an open top for addition of an open can of paint. A lid is selectively attachable to the container to sealably close the open top. A hole is axially positioned in the lid. A first rod is positioned through the hole and is rotationally and sealably attached to the lid. A lower end of the first rod is positioned proximate to a bottom of the container and its upper end protrudes from the lid. A plurality of paddles is attached to and extends from the first rod. A rotator assembly is attached to the upper end of the first rod to selectively rotate the first rod, whereby the paddles mix the paint. A shell, an upper facet of which is open, is attached to the container for stowage of one or more painting tools.