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.

ivanchernyakov

You can add a message with a link to continue shopping on the following pages:
<ul>
<li>Single product page</li>
<li>Cart (compatible with automatic redirection after adding product to cart)</li>
<li>Checkout page</li>
</ul>
You can change the default link and select one of the following options:
<ul>
<li>Home</li>
<li>Shop</li>
<li>Custom Link</li>
<li>Default (back to product) – available for cart with automatic redirection after adding product</li>
<li>Previous Page (referer) (NEW)</li>
<li>Recent Category (NEW)</li>
</ul>
<h4>Try other useful plugins for WooCommerce</h4>
<ul>
<li><a href="https://wordpress.org/plugins/payment-gateway-groups-for-woocommerce/" rel="ugc">Payment Gateway Groups</a></li>
</ul>

Continue Shopping Anywhere for WooCommerce

Adds a continue shopping link on any woocommerce page. You can also customize this link.

WooCommerce Auto Category Thumbnails vs Continue Shopping Anywhere for WooCommerce