Make your own plate holder rack by cutting pieces of wood to the proper lengths, sanding and staining them, adding dowels to separate the plates and attaching all the pieces together. You need two 12 by 32-inch side panels, one 4 by 20-inch shelf, one 7 by 20-inch shelf, one 32 by 20-inch piece of beadboard and nine each of 13-inch diagonal dowels and 7-inch horizontal dowels.
Before assembling the pieces, cut at 1 1/4-inch thicknesses one 1 1/2 by 20-inch top rail with a 1-inch 45-degree slope at one corner, one 1 by 20-inch front rail with a 1/2-inch 45-degree slope at one corner and one 3 1/4 by 20-inch back rail. In the front rail, drill 1/2-inch holes every 2 inches along the vertical back surface, and drill 1/2-inch holes in the sloped surface 1/4-inch over from the lower holes. In the back rail, drill 1/2-inch holes every two inches in the 1 1/4-inch by 20-inch side. In the top rail, drill 1/2-inch holes in the sloped surface to match up with the holes in the front rail. Glue the horizontal and diagonal dowels to the holes to attach the rails.
Assemble the rest of the cabinet by attaching the side panels to the back panel. Slide the shelves between the side panels, and screw them onto the back panel. Screw in the plate holder rack at the bottom of the back panel below the bottom shelf. You can then drill holes at the bottom of the beadboard, and add pegs on which to hang mugs.