Tooltip has a Tooltip.install(Node, Tooltip) method which lets you associate a tooltip with any nodes. However, tooltips installed this way can't be saved in FXML, unless the node is a Control. This is because only instances of Control have a getTooltip/setTooltip getter/setter pair. If we want to be able to configure Tooltip graphically on any node from the SceneBuilder UI, we should consider moving the getTooltip/setTooltip getter/setter pair up one level to Node.