Use toolbars in addition to or in place of menu bars. Toolbars can be more efficient than menu bars because they are direct (always displayed instead of being displayed on mouse click), immediate (instead of requiring additional input) and contain the most frequently used commands (instead of a comprehensive list). In contrast to menu bars, toolbars don't have to be comprehensive or self-explanatory just quick, convenient, and efficient.
Some toolbars are customizable, allowing users to add or remove toolbars, change their size and location, and even change their contents. Some types of toolbars can be undocked, resulting in a palette window.