literally a 100 diff things you could do.

I like the idea of some decorative slat wood accents along the whole wall, (something on this order, w/some sconces) hang art,

or just a portion

here's an example, but this would fit your space

shelves obviously

full shelves, natural wood, white, black, with tile, without, etc

Photo/art gallery

similar to yours. bring in a cool light, maybe add some open shelving to the corners, art in the middle

Turn the rug under the desk.

Thanks. We had the rug the other way but when the desk was sitting on top of it, it was less sturdy. Not ideal design but functional and practical.

Art. Big Beautiful Art.

Beth, with the wood slats would I leave them natural wood or with a stain or should I use grey tone picking up on shelving and desk (which are the same grey colour) or do black like the wall?

whatever you like. you could leave the wall that color, and stain the wood to match your flooring color.

or, do the accent wall trim design and paint it the same as the wall color.

ignore the sink here, but you could also do wood shelves and a cool accent tile

maybe you could do a little coffee bar set up, or beverage bar. or just do photos or books on the shelves. I like the pendant idea over the top, or sconces