Combine wall cabinets and a butcher-block countertop to create a desk with storage.
Use 2x4s (sitting up on edge) to build a base for the cabinets to sit upon. The base should be about three inches set back from the cabinets in front, and one inch on each side. Secure the base to the wall studs using 3" screws.
Set the cabinet boxes on top of the base. If there is an electrical outlet on the wall, measure and cut out a hole in the back of the cabinet before you install it. Secure the cabinet boxes to the wall studs and the base using 3" screws. Attach the cabinet doors to the cabinet boxes.
Cut the 1x4s to size to cover the toe kick on the sides and front of the base. Miter cut the corners for a clean finish. Nail into place.
Cut a standard butcher-block counter top to the size of desktop, use a router to round over the edges. (Many home improvement store will precut the butcher block for you.)
Attach the butcher block to the cabinets by screwing up from inside the cabinet. The size of the screws will depend on the thickness of the butcher block.