Magazine rack in bathroom cabinet to hold curlers, straighteners, brushes, combs, etc. Should've got one at IKEA!
Fancy wrapping paper storage is a $1.50 plastic bag holder from IKEA. Good idea
Tips & Tricks
Protect your wall from stray darts with DIY dartboard cabinet made wine corks....SOLID!
Do It Yourself!
Lid organization- hadn't thought of this and I can't mark up the inside of my cabinets. I'd use the 3m removable ones.
Built-in shelving for the bathroom but maybe some open and some closed for the things you don't want to see
You can place rope lighting under bathroom cabinets to make it easier for kids at night.
For the Home
Super easy & useful! Magazine File to Store Bags, Foil, and Plastic Wrap | The Kitchn #organize
This kind of magazine rack works great for storing plastic wrap, etc. IKEA magazine rack.
To maximize space in the bathroom add a shelf over the door to store extras like toilet paper and extra towels. http://hative.com/clever-bathroom-storage-ideas/
Think Sideways Attach baskets to your bathroom wall to organize your linens.