I would hang three prints in a row on each wall. Frames that match the island color. Sage green Botanicals would be nice.

Art .

Multiple posts about those walls.

Stand by my previous suggestion of shallow storage to get some things off the counters

Agree re the shallow pantry storage (definitely with doors) on at least one of the walls. Have you just moved in? If so, you might want to wait till you get settled in before deciding how much storage you need. The botanical art idea is good, but that depends on your personal taste and your decor style.

I’d definitely recommend adding some art! It’s a great way to bring warmth and personality into the kitchen. Depending on your style, you could go with a large statement piece or a gallery wall with smaller frames. Art with some color or texture can really liven up blank walls without cluttering the space.