It would be nice if Quick (or more likely QQC2) would have a way to create a system tray icon with some associated menu, especially without a dependency on Widgets. Something like

SystemTrayIcon {
contextMenu: Menu

toolTip: "It's a system tray icon!"
icon: Image {} // Maybe Image is too generic?
}

QSystemTrayIcon itself lives in Widgets, mainly for the menu, so it cannot be reused directly. Though it might still be possible to at least reuse the QPA layer beneath it.