In our open-plan office, this was a huge issue. Headphones weren't enough, and "do not disturb" signs didn't really help. We started using the Luxafor Cube focus indicator to visually show when someone is busy. It uses a simple color system everyone quickly understood—red means don't interrupt, green means you're available. Having that visual signal changed how people approached each other, and interruptions dropped noticeably. It's not just about the gadget, but about setting a respectful culture around focus time. Honestly, this small investment paid off in better team dynamics and deeper concentration blocks.