Use a circular saw to cut the cupboard pieces from 3/4" plywood. Assemble the basic box shape with wood glue and nails.
Use wood glue and nails to attach the shelves and backing to the basic box.
Use a finish nailer to attach 3 /4" wood trim to all exposed edges on the front of the unit. Prime and paint as desired.
Locate and mark the position of the wall studs. Position the shelving unit on the wall, adjust for level and plumb, and attach by driving screws through the box into the studs.
This small, rounded shelving unit will fit on the blank end of the kitchen cabinets. Located right by the kitchen door, it will be a perfect place to drop keys, cell phones and other small carry-along items. Measure the depth and height of the cabinet to get the correct dimensions and sketch out a design.
Use a circular saw to cut oak plywood to the correct dimensions for the shelves. The two flat "walls" of the unit will be the same height and width as the end panel of the kitchen cabinet.
Measure the thickness of the plywood and make one of the shelves narrower than the other by that measurement. This will cause the unit to be correctly squared up when assembled.
Use wood glue and nails to attach the two side panels at a 90-degree angle. The slightly narrower panel should butt up against the wider one so the final structure is the same width on both sides.
Measure the inside width on the inside of the unit from the joint to the edge. Cut a piece of plywood in a circle with this radius, then cut the circle into four quarter-circles. This yields four potential shelves for the unit.
Wearing plastic gloves, stain the wood to match the surrounding cabinetry.