Nav Menu Query Meta Box (NMQMB) allows you to quickly add a post or a taxonomy to your menu by specifying its ID. NMQMB adds an additional meta box to your menu sidebar for your themes, from which you choose whether you want a insert a post or a taxonomy, and its ID.
Nav Menu Query Meta Box depends on WP Ajax Query Plugin.
Why I Created It
I had to maintain a WordPress installation with over 2000+ articles and 800+ categories, and needed a quick way to insert a post or category into the menu.