add moulding to Ikea bookshelves and paint the backs {build three self units so it sits lower}

How To Achieve a Well Styled Bookcase-Need a lot of storage space or want to display a collection? This is a great example of a well styled bookcase made with 4 IKEA Billy bookcases

Create a desk space in an alcove or extra closet (does that exist?) Hide with a funky curtain when not in use...install an antique knob, etc. to hold back the curtain so it doesn't get in the way when sitting at the desk

17 Surprising Home Office Ideas

Built-ins for alcove incorporating a desk.

Second bedroom alcove study nook to replace old plantation cupboards: simple flat bench with 1 modern draw, no handle, ceiling high shelving dimensions or more, white, exposed instead of enclosed by a cupboard door.