Meet the BusyBox: a Bluetooth smart sign that lets others know when you are busy. This app connected “do not disturb” sign integrates with apps such as Slack, Zoom, and Google Calendar. Its app lets you adjust LED brightness, group multiple BusyBoxes, and create presets.
You have the option to change the messages by removing the cover. 6 different messages are included. The BusyBox is designed to play well with Siri and Google Assistant. It runs on a 5000mAh battery.[where to get it]