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.

Anthony Hortin

Simple Catalog for WooCommerce turns your WooCommerce store into a simple online catalog site.
WooCommerce is a fantastic eCommerce plugin, but sometimes you might only want to showcase your products rather than sell them. This plugin allows you to use the power of WooCommerce to manage all your products whilst hiding the eCommerce functionality like the Add to Cart Buttons, Prices, Ratings and the Cart & Checkout pages from your customers.
Later on, when you decide you’re ready to sell your products online, simply disable this plugin and all your WooCommerce functionality will return.
Simple Catalog for WooCommerce allows you to:
<ul>
<li>
Hide the Add to Cart button
</li>
<li>
Hide the Product Price
</li>
<li>
Display a message to your customers when hiding the Product Price along with adding a link to one of your pages
</li>
<li>
Hide the Product Ratings
</li>
<li>
Hide the Product Reviews tab
</li>
<li>
Hide the Cart page
</li>
<li>
Hide the Checkout page
</li>
</ul>
You’re able to hide the above WooCommerce features from all users or just hide them from users who haven’t logged in.
For use with WooCommerce 2.6 and above.

Simple Catalog for WooCommerce

Turn your WooCommerce store into a simple online catalog or alternatively, only allow store access to customers once they're logged in.

WooCommerce Auto Category Thumbnails vs Simple Catalog for WooCommerce