A quick, simple and affordable idea for organizing your bathroom can be found at any general store that ends in 'mart'.
I found these wire baskets in red and blue to match the kids bathroom decor. I bought four of them and they fit perfectly under the sink. One of them is used to store hair accessories, gel, the curling iron, straightener and brushes.
A second basket holds cleaning supplies, a scrub brush and paper towels.
The third holds dental floss, tooth brushes, orthodontic supplies and extra toothpaste containers and empty toothbrush travel holders.
The last bin holds 'personal items' of a female nature.
I believe I paid somewhere around $2 per basket. Very cheap, very cute and very organized!