My client's daughters share a bathroom. They're at the age where personal things aren't shared and they have distinct personalities for how to store or display toiletries, hair clips, jewelry and nail polish. I used this technique - also great for custom buffet service - and the results speak for themselves. Each girl has her unique private place to stash their stuff. Plates and candleholders can be found at garage and tag sales, and off-priced shops like Marshals and Home Goods.
I love old bowls for stashing things inside the drawers too.
For Mom, storing her makeup and brushes in easy reach is mature and classic in blue and white porcelain.