Give your site header a little extra personality by setting a site header image. How about individual Posts, Pages, or Portfolio items? Yep, a custom header image can be set for any one of those page types. See an example here!
By default, the site header image users the WordPress header functionality found in Appearance → Header. Adding a custom header image on single page types is done by setting a featured image and enabling a checkbox setting to display the image in the header.