Well, this is one small and simple tip, I bet you may have missed. To those of you who find the quick launch bar icons too small for their comfort, there is a simple way by which you can make them larger.
Enlarge Quick Launch Toolbar Icons
First right-click on the task bar and unlock it. Having done that, move your cursor to a blank area on the quick launch bar. The quick launch bar is the area between the two vertical almost invisible dotted lines, near your start button on LHS.
Right click in this area and you will see the context menu appear. If you don’t unlock the task bar, you wont get to see this menu. Here, select View > Large Icons.
Your Quick Launch bar will now show large icons. The task bar will double in height and enclose the start orb. Your Tab buttons and System Tray icons will however continue to be of the same size.
If you wish to add text to these icons, simply select the Show Text option too.
Lock the Task Bar after you have finished your customizations.
Speaking of the Taskbar icons, how to Center your taskbar icons may also interest you.