Abstract: A painter's box or artist's sketch box has a removable lid, a reversible palette, movable partitions enabling the changing of the compartments of the box, a detachably mounted brush holder, a detachably mounted charcoal holder, and support legs that support the box when its lid is closed and which relieve stress on the hinges that interconnect the main body of the box and the lid when the lid is fully open. The hinges are of the pull-apart slip hinge type and include pins of differing lengths to facilitate reattachment of the lid to the main body of the box, and a groove is centered along the parting line of the lid and the main body to accommodate the hinge barrels to further facilitate alignment of the lid and the main body of the box. A thumb hole formed in the palette enables it to be held easily when separated from the box and provides an access opening for a jar of mineral spirits when the palette is not held.