core/homeassistant/components/idasen_desk/icons.json

{
  "entity": {
    "button": {
      "connect": {
        "default": "mdi:bluetooth-connect"
      },
      "disconnect": {
        "default": "mdi:bluetooth-off"
      }
    },
    "cover": {
      "desk": {
        "default": "mdi:desk"
      }
    },
    "sensor": {
      "height": {
        "default": "mdi:arrow-up-down"
      }
    }
  }
}