I would use a bookcase unit with closed doors on the lower half and not too high. Wide and low maybe. Closed lower cabinets are great for toys, games and will not clutter. Open shelves tend to get cluttered after a while. When displaying books, use in stacks standing and lying down. Open space between groupings, not all lined up in rows. Add some decor items sprinkled among the books to give the eye a visual break. I would choose a horizontal art piece for the chair wall. Add some art on the long TV wall leaving a lot of bare wall between the TV . and the artwork between the corners of the chair wall and the window wall.

Please post several pictures of the room so we can help you

I didn't like any of the stock standard vanities I saw being sold. By chance I happened to see a second hand vanity being sold on FB so I brought it ( see photo). I liked its shape and solid profile but didn't like its colour. I took it to a auto car spray painter and had them spray paint it in Benjamin Moore Kendall Charcoal (a greige grey). They did an awesome paint job with a mirror like finish. I brought a piece of primestone (marble look) for the top, two small towel rails to be fixed in the underside of the vanity that is sticking out so I can hang hand towels on either side. I brought a new tap for it (but kept the vessel basin). I ordered in some new legs for it online because I didn't like the legs on it (see below). Its currently at a joiners getting put together. I've actually enjoyed the process of pulling it all together. Sure by the time it has been put together I probably would have spent the same amount that it would have cost me to do a custom vanity however I think there is something to be said for re-using something a second time round rather than buying into consumerism that abounds us. All up I've spent $1,074 NZD for the vanity, the spray paint job, new legs from www.prettypegs.com, the new towel rails from Reece Plumbing & buying a new Elementi tap. That doesn't include the joiners costs - yet. I needed storage in my vanity. This one fit the bill for me. Good luck with what you choose to do! I am doing a bathroom remodel as well and enjoying it.

I love trunks! Add such character..hope you can keep yours. One of mine is a military chest brought out with my great grandfather when he emigrated to South Africa, all he had was in it..in 1892, age 19. He had 10 children. We emigrated to NZ with it 20 years ago..our history with it. Could never sell that one!!! I found an example of what I think would work under the tv..now to afford it ha ha!.