The patch Accordeon CK - Virtuemart can show your categories. The menu Accordeon CK is an advanced accordion menu system that allows you to insert some descriptions for each menu link, to load any module in the menu structure, and display some image beside the text or just without any text.
JUX Mega Menu is responsive and the most completed Joomla menu module developed by JoomlaUX team which allows you to display a ton of content in menu item including text, images, module and articles. It works beautifully with Joomla 3.x.
Make the same menu as on Joomla.org.This is a RESPONSIVE Megamenu, dropdown menu with multicolumns and multirows. You can also load some modules inside. iPhone, iPad, Android compatible. Virtuemart, Hikashop, Joomshopping, AdsManager compatible.