The expanding taskbar
Not only can the taskbar be moved around but also it can be made taller. If you want to have a whole lot of icons kept there and have the screen real estate to spare, you can enlarge the (unlocked) taskbar by placing your mouse on the top border of the taskbar until you see a double-headed arrow. Then hold down the left button and drag to make the taskbar as big as you like. These instructions apply to a taskbar at the bottom of the screen; change the instructions accordingly if your taskbar is in a different position. To make sure the size isn’t accidentally changed, lock the taskbar.