Remove the ironing board and its hardware. Usually a screwdriver or drill will do the job.
Patch any holes with wood putty and a spatula. Sand the inside of the cabinet and wipe off the dust from sanding.
Paint inside the cabinet. When the paint is dry, hold up the lids you want to store so you can see how they fit. Hammer nails or screw cup hooks in place.
Cut four shelving standards to fit inside the cabinet. Screw two in on each side, making sure they are level. Place one close to the back wall of the cabinet and the other close to the front of the cabinet on each side.
Place clips in the standards at the heights you prefer.
Measure the depth and width of the cabinet and cut shelves 1/2 inch less than the depth and 1/4 inch less than the width of the space. Put the shelves in place on the clips.
Measure the width and depth of the cabinet and purchase wall pockets that will fit inside from an office supply store.
Prepare the inside of the cabinet as in Section 1, removing hardware, filling holes and painting.
Screw the wall pockets in place and fill them with files, mail and other paperwork.