Mason jar one is my favourite, & definitely doable 12 Bathroom Organization Ideas. A few of my favorites: Container Store mini bins for eyeliners and lip liners, over the door shelf, and magnetic strip.
Bathroom Décor: Quick Bathroom Decorating on a Budget
Bold on a Budget: 10 DIY Details to Banish Boring Bathrooms. "Nothing says 'bold' like a brightly colored dinosaur figurine generously holding your toilet paper. Spotted on The Chic Home." // I love this!