We’re wrapping up our list of design styles today—if you missed the first part of the list, check out yesterday’s post here.

Modern. Does your room look like a page from an IKEA catalogue? Are you a fan of clean lines and solid colors? If so, it sounds like you have a modern aesthetic. You like innovative and sleek designs, and despise clutter and busy patterns. Look for metal, black, and white furniture, in addition to smaller pieces in one or two accent colors.

Funky. What’s that on your wall… a street sign? Did you make a stool out of an overturned trashcan? Well congratulations, you’re the very definition of funk. You like coming up with innovative new uses for old items, in addition to finding pieces of furniture and decorations that make people do a double take. Just remember, it’s better to have a handful of really cool things than way too many sort of cool things.

Setting up a bookcase is easy. Arrange all the books spines-out and right-side-up, add in bookends here and there, and alphabetize to taste.

But what if your bookcase didn’t look like a bookcase? What if it looked like a ceiling, a cozy hideaway, or a work of art? This effect is easier than it sounds — check out our three favorite innovative bookcase designs:

CAVE by Sakura Adachi

Remember how it felt to read a book under the covers with a flashlight as a kid? You can feel just as cozy — but with slightly better light — in this innovated CAVE bookcase, featuring a built-in seating area. Plus, CAVE is double-sized, so you can place it against a wall or employ it instead as an unexpected partition.

Rafter Books by Apartment Therapy

Why buy a bookcase when your living space has storage built in? This creative solution allows homeowners to save money and space, and to showcase their literary preferences in a truly unique manner. Apartment Therapy recommends low ceilings on this one, so you can actually read the books without too much trouble.

Quad by Nauris Kalinauskas

Whether you’re looking to store books, CDs, DVDs, or some combination, the funky Quad case has got your covered. With crazy angles and compartments of varying size, this baby has room for everything! The Quad is available in different sizes and colors for a truly personalized look.

For more neat bookcase ideas, take a look at this list of 20 from Incredible Things.