Recently moved and want to put my desk/study area here but its an awkward shape and my current set up does not work.

I want to maybe put in a corner desk or fashion one from a finished piece of wood and legs, enough to fit a unit of drawers underneath and be deep enough to sit at comfortably with a keyboard/book and the monitor raised on an arm. Also considered putting pieces of wood around the fireplace to create a semi bookcase/shelf. I'm just trying to get an idea of whats possible.
More photos below:




