byanofsky

WooCommerce Sort By Stock is a relatively simple plugin. It does one thing and one thing only: allows you to sort by stock amount in WooCommerce.
Upon activation of this plugin, you will be able to sort products by the amount of stock remaining on your WooCommerce product dashboard page. Simply click on the <code>Stock</code> admin column to arrange by ascending or descending.
If sorting in ascending order, out of stock items will be shown first, followed by in stock but inventory not managed (no stock amount number), and finally showing in stock items which have a stock amount number, starting with 1 and increasing.
If sorting in descending order, will provide the opposite, starting with items with the largest amount of stock, moving down to out of stock.

WooCommerce Sort By Stock

It worked

Sort your WooCommerce products by the stock amount on the WooCommerce product dashboard page.

Shellbot

** 07/06/18 – Updated for the latest version of WooCommerce **
By default, WooCommerce displays a neutral and uninteresting category image placeholder in those cases where a category has 
no explicitly set thumbnail. This plugin simply replaces the placeholder image with a product image from that category.
User can choose whether to use a random product or the latest product from that category.
Feature requests welcome, please <a href="https://wordpress.org/support/plugin/woocommerce-auto-category-thumbnails" title="Plugin support forum" rel="ugc">post in the support forum</a>.
Usage
There is no complicated setup, simply install the plugin and configure WooCommerce to display categories. Any categories containing products but without a 
category thumbnail will now display a product image.
To switch between random and latest product display, see the settings page under WooCommerce > Settings > Auto Category Thumbnails.
More options coming soon. <a href="http://codebyshellbot.com/wordpress-plugins/woocommerce-auto-category-thumbnails/" title="WooCommerce Auto Category Thumbnails" rel="nofollow ugc">Plugin release page</a>.

WooCommerce Auto Category Thumbnails

Replace the default WooCommerce category image placeholder with a relevant project image instead.

WooCommerce Sort By Stock vs WooCommerce Auto Category Thumbnails