This is such a great idea. I hate all those bottles cluttering up a shelf, it looks so junky. And here's a tip: Shoe bags like this one can be put in the wash with some towels to "scrub" them and then allowed to drip dry outside or in the garage.
Plant holders make great hair styling supply holders. Instead of hanging plants in them, you just mount them to the wall and put your blow dryer, curling iron and other hair supplies inside. They look great in the bathroom and help you to save a bit of cabinet space.