In addition to adding more headroom and bringing in natural light, a dormer can shelter a miniature room of its own within an open floor plan. Add a desk and you've got a new home office; a pint-size table and chairs becomes the kids' craft area; or keep it simple with a comfy reading chair and footstool.
TIP: Soften sharp corners. An attic's quirky angles are charming, but they can gouge you if you're not careful. Where drywall forms an outside angle, a bullnose corner bead will protect you and keep the wall's surface from getting all dinged up.