Suggestions for wall behind setup

I want to fill the wall behind my setup and I’m stuck. I’m going for a HoneyBri theme and I’m considering:

• acoustic/soundproofing panels
• floating shelves
• Nanoleaf-compatible lighting
• hexagon decor/panels

I already have Nanoleaf Lines (60° kit) on the right in two hexagon shapes so I’d love ideas. Preferably looking for reference images if you have any, thanks in advance!