We found a big dresser drawer at a secondhand shop, cleaned and painted the whole thing, then added feet to the bottom. We customized it for the owner with a few wooden letters, then stuffed the drawer with a big inviting pillow.
Remove the handle on the drawer (you will not need to put it back). Place four wood blocks on inside corners of drawer and secure them with wood glue. Place something heavy — like rocks — on top to hold the wood in place while the glue dries. The blocks are needed for the screw-in legs to have something to bite into since the bottom of the drawer maybe too thin and the legs will wobble or poke through the bottom.
On the underside of the drawer, mark the placement of the feet. Be sure to mark the same exact location on all four corners, about 1 inch in from the edge. Pre-drill holes for each of the legs. The holes should be much smaller than the screw-in feet, so the screw will grab the wood and help keep it stable.