Easily add an icon to a post or page using the [icon] shortcode.
For example, to display the note icon, shortcode usage is [icon=note]; 1,000 icons from the famfamfam Silk collection are included.
Defintion of icons can be found at famfamfam.com: http://www.famfamfam.com/lab/icons/silk/; a settings page also shows all available icons.