10 DIY Under-Bathroom Sink Storage Ideas: Clever Storage Tricks I've Used to Tame the Chaos Beneath the SinkElena MoreauSep 24, 2025Table of Contents1. Sliding Drawer Baskets2. Tiered Shelving Rack3. Adjustable Tension Rod for Spray Bottles4. Clear Pull-Out Bins5. Door-Mounted Organizer6. Stackable Drawers7. Lazy Susan for Toiletries8. PVC Pipe Holsters for Hair Tools9. Raised Shelf Over Pipes10. Color-Coded Storage BinsFAQFree Room PlannerDesign your dream room online for free with the powerful room designer toolStart for FREEYears ago, I had a client who kept their cat’s litter box under the bathroom sink — yes, really. It was… creative, but definitely not hygienic. That project made me realize how often this tiny, awkward space under the sink gets totally wasted. As a designer, I’ve learned that clever storage hacks here can transform your bathroom without a full remodel. Small spaces truly force us to think big, and today I’m sharing 10 DIY under-bathroom sink storage ideas I’ve tested myself.1. Sliding Drawer BasketsAdding sliding baskets instantly makes the deep back area accessible. It feels like upgrading a car from a manual crank window to electric — you never want to go back. Measure carefully, though; those pipes can be tricky.save pin2. Tiered Shelving RackWhen vertical space is ignored, you lose half the potential storage. A tiered rack can hold cleaning products below and towels above. Just remember to choose water-resistant coatings in case of splashes.save pin3. Adjustable Tension Rod for Spray BottlesA tension rod across the width of the cabinet makes a perfect hanging rack for spray bottles, freeing up the base area. I once used this in a rental to avoid drilling — landlord approved!save pin4. Clear Pull-Out BinsSpending 10 minutes searching for nail clippers is no one’s idea of fun. Transparent pull-out bins keep everything visible, and they’re surprisingly satisfying when labelled neatly.save pin5. Door-Mounted OrganizerThe inside of cabinet doors is prime real estate. Adding a shallow organizer keeps hairdryers, brushes, and even small towels within easy reach — smart and space-efficient.save pin6. Stackable DrawersFor chaotic piles of skincare products, stackable drawers are a lifesaver. It’s a simple project that feels custom but is budget-friendly. You just need a bit of patience to find the right dimensions in store or online.save pin7. Lazy Susan for ToiletriesI resisted this idea for years — a rotating tray under the sink sounded excessive — but I was wrong. A small Lazy Susan lets you spin and grab whatever you need without knocking over half the cabinet.save pin8. PVC Pipe Holsters for Hair ToolsCut pieces of PVC pipe, mount them upright, and suddenly your curling iron has a safe home. It’s heat-friendly and won’t clutter drawers. I’ve even used this trick in a small apartment renovation to maximize every nook.save pin9. Raised Shelf Over PipesPipes are awkward, but adding a custom-fit raised shelf above them lets you store flat items without hindering access. It’s an easy woodworking project for beginners.save pin10. Color-Coded Storage BinsSometimes chaos isn’t about space but about not knowing where things go. Color-coded bins — one for first aid, one for cleaning, one for toiletries — make organization intuitive. I recently added this to a tiny guest bathroom and paired it with a visual layout mockup so my clients could see the finished look before buying anything.save pinFAQQ: Do I need power tools for these ideas?A: Only for the PVC pipe holsters and custom raised shelves — the rest are easy, tool-free solutions.Q: How do I waterproof under-sink storage?A: Use moisture-resistant materials like plastic bins or metal racks, and consider adding a waterproof mat at the base.Start for FREEPlease check with customer service before testing new feature.Free Room PlannerDesign your dream room online for free with the powerful room designer toolStart for FREE