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.

Middelkoop.cc

FeedbackCompany

This plugin enables you to display trusted, verified store review widgets on your WordPress website, as well as product review widgets in your WooCommerce webshop. You can also send automatic review invitations to customers. This plugin requires an API key from Feedback Company to function.
<ul>
<li>Compatible with WooCommerce (product reviews & review invitations)</li>
<li>Compatible with WPML and Polylang (multilanguage support)</li>
</ul>
After installation of the plugin, you will find configuration instructions on the settings screen.

Feedback Company

This plugin integrates Feedback Company review widgets and order registration into Wordpress/WooCommerce

WooCommerce Auto Category Thumbnails vs Feedback Company