AivarasFX

Plugin creates widget that displays one random image from current page or post attached images, or from any page or post set by ID. You can set size of image to display.
Displays a random image from post or page you specify. Plugin creates FX-Random-image widget. Use widget to add image to sidebar or add <code><?php FX_Random_Image($pageID, $link, $size); ?></code> function to theme. $pageID is page/post ID from there to take images, if $link = true adds link to image, $link = false no link on image, $size – image size (‘thumbnail’, ‘medium’ or ‘large’). Example <code><?php FX_Random_Image(1, false, 'large'); ?></code>

FX random image

Plugin displays random image from attached images to page or post.

Version 0.91 update:It works for non flickr.com images,have fun! Get Flickr Thumbnails plugin can get thumbnails for photos on your site that from flickr.com,you can choose recent or random mode,and it will link to your own post.

Get Flickr Thumbnails

Get Flickr Thumbnails plugin can get thumbnails for photos on your site that from flickr.com

FX random image vs Get Flickr Thumbnails