5. Under-Sink Pull-Out Drawers

The area under the bathroom sink is often a chaotic jumble of bottles, cleaning supplies, and half-used products. Adding pull-out drawers transforms this space into one of the most useful storage zones in the entire bathroom. Sliding drawers make it easy to see and reach everything, eliminating the need to dig through the back of the cabinet.
You can buy ready-made pull-out drawer systems designed specifically for under-sink use, which include narrow tracks that work around plumbing pipes. Brands like Rev-A-Shelf offer tiered drawers in widths that fit standard vanity cabinets. Installation usually takes about an hour and requires only a screwdriver and the included hardware.
For a more custom approach, you can build your own drawers using plywood, drawer slides, and small cabinet handles. Measure the inside of your vanity carefully, paying attention to the location of the P-trap and water supply lines. Build two narrow drawers that slide along either side of the plumbing, or build a single U-shaped drawer that wraps around the pipes.
Materials for the custom build include ½-inch plywood, full-extension drawer slides, wood screws, edge banding, and small knobs or pulls. Budget around forty to seventy dollars depending on the size of your vanity. Allow a full weekend for the custom build, including measuring, cutting, assembling, and finishing.
Style the drawers with small bins or trays so items don’t slide around. One drawer can hold hair tools, another can store cleaning supplies, and a third can keep daily-use products within easy reach. A small lazy Susan on the bottom of the cabinet works wonderfully for tall bottles of hairspray or cleaning products.
A common mistake here is forgetting to account for the plumbing. Always measure the location of the P-trap and shut-off valves before cutting any wood, and build around them rather than over them. It’s also a good idea to line the inside of the cabinet with a waterproof mat to protect against the occasional leak.