Window seat with built-in bookshelves. Could use IKEA: Hemnes daybed kitchen pullouts each), and Billy bookcases each or with uppers each). Total cost with knobs, trim, paint, etc. would be about The skylight is a nice touch too!
Amazing built-in nook with glass lantern providing reading light. Reading nook with gray ikat fabric cushions and pillows as well as white roman shades covering windows. Second landing nook with built-in reading lounge and built-in shelving.