WunderMenu gives you ability to add your own items to navigation. To add it you need to fill Custom items Identifier option in NWDthemes > Wundermenu > Configuration. This option define Static block indentifier that will be used for custom items html ( will be appended to the end of existing menu).
Sample HTML
<li class="level0 level-top dropdown-classic dropdown-categories parent"> <a href="javascript:void(0)" class="level0 has-children">Samples<span class="caret"></span></a> <div class="wundermenu-wrapper wundermenu-classic dropdown-menu" > <ul class="level0 navigation-submenu"> <li class="level1"><a href="{{store url='blog'}}" class="level1 ">Blog</a></li> <li class="level1 dropdown-classic dropdown-categories parent"> <a href="{{store url='faqpage'}}" class="level1 has-children ">FAQ Page<span class="caret"></span></a> <div class="wundermenu-wrapper wundermenu-classic dropdown-menu" > <ul class="level2 navigation-submenu"> <li class="level2"><a href="{{store url='faqpage' _query='___store=cars'}}" class="level2 ">List View</a></li> <li class="level2"><a href="{{store url='faqpage' _query='___store=electronic'}}" class="level2 ">Collapsible View</a></li> </ul> </div> </li> <li class="level1"><a href="{{store url='typography'}}" class="level1 ">Typography</a></li> </ul> </div> </li> <li class="level0 level-top"><a href="{{store url='contacts'}}" class="level1 ">Contact Us</a></li>