Is your bathroom unorganized and cluttered. Let's see what we can do to change your problem. Stand back and look for wasted space corners along with the cupboards. There are ways to rearrange things and organize them to give you more room and space as well.
What do you have under that sink?
Do you have a lot of empty space down there? Lets try adding a shelf to fill it up and not have to stack everything on top of each other. Take some measurements and decide just how high you need the space to be on the bottom for cleaning supplier or maybe that package of toilet paper you bought that was on sale. Mark a spot with a marker on all four corners where you want to put a top shelf. Places like Lowes and Marnards even Home Depot has different size shelving and colors too.
Take your measurements with you and some places will even cut it for you so all you have to do is mount it when returning home. Tell the salesperson what your trying to do and they can recommend the mount supplies you'll need. Know how to us a drill, oh that's ok if you don't a screw driver will work just as good only it is harder to do. Take a small nail and make a hole where you want to mount the shelving units. Using the drill or screwdriver install, the mounting brackets and lay down your new shelf on top of it. Now that wasted space has a shelf in it and you can put the small items on it towards the top.
Take a look at your nearest hardware or department store usually Rubbermaid has a lot of ideas to fill in the area under your sink. Get some small drawers and stack them in there on one side; you can put your soaps and small items in them even your extra wash cloths and hand towels will fit in these drawers. Rubbermaid also makes shelves that stack on top of each other that you can put in this space. You can make space to store nice towels and other bathroom accessories. Rubbermaid is easy to clean just fill up the tub or take outside and use the garden hose on them. Warm soapy water and a hose to rinse will do a great job and the mess is all outside.