Whether touching up those precious family photos or building your own website, specific tools and commands will be more popular with you while doing one project versus another. You can easily add, remove, or create your own toolbar(s) using the customize dialog box. Right click any blank area on a toolbar, then select Customize to open the Customize dialog box.
Don't need a specific command or toolbar? You can remove (or add, for that matter) any icon from the toolbars. Either drag the icons onto the toolbar from the customize dialog box or if not wanted simply drag the icon from the toolbar and drop it back into the customize dialog box.