The Flags plugin allows small flags to be displayed in posts or pages using a shortcode.
For example, to display the flag of the United Kingdom of Great Britain & Northern Ireland, you would use this shortcode [flag=gb] and it would show .
The plugin contains 252 flags; more flags in PNG format can be added simply by dropping them into the plugin’s images folder and using the filename in the shortcode.
This is an example of a toggle in a widget, enabled with the Shortcodes in Widgets.