xili-postinpost provides a triple toolkit to insert post(s) everywhere in webpage. Template tag function, shortcode and widget are available.
widget settings UI for a simple query
widget settings UI for a simple conditional query and all display/input options set.
widget settings UI for a two conditional queries.
widget settings UI for a query combined with current language (requires xili-language).
widget settings UI: in this case, Featured images of category ID11 will be listed in ul li list according current language.
appearance - customize - widget settings UI: real time results during settings (WP 3.9+)