Recently, I moved into a home where there was a perfect space in front of a window, but I didn't have the ability to use brackets. I went to a thrift shop and got 4 cups, all the same height. I used them for shelf supports.
With regards to children and their washroom habits, I have found from time and motherhood that children and youths have some main things each of them need and it is a little different for each person.
I love those wire basket shelves that adjust over the tub. I finally found one, but then realized that the oval shape of my tub made it not fit.
Each of our 3 children has a small plastic tote stored in our hall linen closet to take into the bathroom. They keep all of their toiletries in these totes.
Don't have enough space to store all your toiletries in the bathroom? Hang a see-through shoe bag on the back of the door. Everything slips right in and you can see what you need.
Do less wash, buy each child a towel in their own color. When my 4 kids were growing up, I had a problem with them just throwing their bath towels onto the bathroom floor.
I clip my hair clips to the towel rack in my bathroom. They fit perfectly!
I had a lone Dollar Tree hook over the bathroom door facing inside. It was for my robes, but was pretty high up. A friend gave me one she didn't need anymore and boy, has it made life easier.
I have a bad habit of stockpiling toiletries because I never know what I have on hand or I know I have it and can't find it. I hung a pocket shoe bag on the inside of my linen closet and now put new purchases (and those from my stash) of shampoo, toothpaste, deodorant, etc.
I was trying to de-clutter the bathroom counter, and looked up to see this towel ring and thought "I wonder if these would all fit?" and sure enough they did!
To free up some counter space in the bathroom, I purchased a shower caddy and placed it on the mirror. The suction cups hold it on tight and it has worked great for me.
I always found my bathroom counter becoming cluttered with many items from hairbrushes, to deodorant, to body spray, etc. To minimize the clutter, I purchased a clear pocket shoe organizer that hangs over the door.
I love shower caddies. They are convenient and hook over the shower faucet just perfectly. Except when they don't.