Toemat

This sidebar widget uses Google images to find a totally random image from the web and display it on your site. 
Give it a try! It adds a little fun and spontaneity to any site or page.
<ul>
<li>The widget can be styled with CSS.</li>
<li>Uses php cUrl to connect to Google’s API.</li>
<li>Seeds the search with the first sentence from a random MLIA quote.</li>
<li>Options for widget title, show caption, and show description.</li>
</ul>
Check it out!
By installing this plugin you are accepting all responsibility for the random images that show up 
on your site. The author is not responsible in any way for anything that happens as a result of the 
images.

Completely Random Widget

Uses Google images to find a random image from the web and display it on your site.

theseforumslookquitehelpful

This plugin was built to add a “Random” Product Sorting Order to WooCommerce with working pagination.
Other solutions I found that added a “Random” Product Sorting Order did not preserve pagination.
This plugin will sort your WooCommerce Products in random order. A random sort has a transient life of one hour. (In version 0.9.1, the duration is not a settable option. It is fixed at one hour.) Every hour a new random sort is generated. Pagination works as expected, meaning each WooCommerce Product will be diplayed once and no more than once.
This plugin requires the WooCommerce plugin.

WooCommerce Random Product Sorting with Pagination

Add a "Random" Product Sorting Order to WooCommerce with working pagination.

Completely Random Widget vs WooCommerce Random Product Sorting with Pagination