I would do the boxes next to each other (or shelves for art supplies & books), add a cushion on the boxed (shelf area) with textured pillows. Then add a leg to support the desk on the end with two chairs.
After three days of headaches I'm crossing my fingers for a better day today! Probably shouldn't spend hours late into the night squinting at my phone on social media. may not be helping UPDATE: for those who were wondering the bunk is an ikea kura fra