Here is a little collection of command line shortcuts that you can use to save some MouseClicks:

Hibernate System

%WINDIR%\System32\RunDll32.exe powrprof.dll,SetSuspendState Hibernate

Lock System

%WINDIR%\System32\RunDll32.exe user32.dll,LockWorkStation

Swap primary mouse button

%WINDIR%\System32\RunDll32.exe user32.dll,SwapMouseButton