Widget Dropdown Menu Alternatives?

Hello,

I understand that at the current moment that widgets don’t support fly-out or drop-down menus. So, what other methods could I use to accomplish a one large feature with many subsets type of selection menu? I really don’t want to have to clutter the viewport with more widgets. Are tabbed pages and dropdowns a possiblity inside the widget using classical means? There isn’t a lot of super detailed in-depth tutorials really explaining the widget environment.