A paint brush holder includes a rigid sheet with a first surface and a second surface. The holder has a ledge surrounding an aperture that accommodates a mouth of a regular mouth mason jar, recessed with respect to the first surface. Grooves extend across a portion of the first surface on a first side of the aperture. Holes extend through the rigid sheet on a second side of the aperture opposite the grooves. The holes have a diameter larger than a smallest diameter of a paint brush handle and smaller than a largest diameter of the paint brush handle.