Christian Rassin

Perfect for adding tips, charity donations or optional contributions directly in the WooCommerce cart.
Cart Donation for WooCommerce allows customers to easily add a donation directly from the cart page.
The plugin automatically creates a hidden donation product and adds it to the cart using a smooth AJAX experience.
This plugin does not collect or store personal data on its own.
Requires WooCommerce to be installed and activated.
Perfect for:
<ul>
<li>Charity donations</li>
<li>Tips</li>
<li>Support contributions</li>
<li>Rounding up orders</li>
</ul>
<h3>Features</h3>
<ul>
<li>Custom donation amounts</li>
<li>Quick-select donation buttons</li>
<li>AJAX add-to-cart (no page reload required)</li>
<li>Only one donation item in cart (automatically replaced)</li>
<li>Fully removable donation item</li>
<li>Multi-language support (EN, NL, FR, DE, ES, IT)</li>
<li>Customizable donation box title</li>
<li>Custom donation product image</li>
<li>Lightweight and fast</li>
<li>Compatible with most properly coded WooCommerce themes</li>
</ul>
<h3>Usage</h3>
<ul>
<li>Customers can enter a custom amount or use quick-select buttons.</li>
<li>Only one donation is active in the cart at a time.</li>
<li>Adding a new donation replaces the previous one.</li>
<li>Donations are added via AJAX for a smooth experience.</li>
</ul>
Note: 
The donation option in the cart is only displayed when another product has been added. You can then remove that product, leaving only the donation in the cart.
Pro version: Create and place multiple donation blocks in the cart or anywhere on your website using flexible placement options, shortcode support, and many more advanced features.

Cart Donation for WooCommerce

Easily add donations or tips to your WooCommerce cart with custom amounts, quick buttons and a smooth AJAX experience.

Terry Chay

This adds a responsive and mobile-friendly tooltip popup in the vein of 
<a href="http://osvaldas.info/elegant-css-and-jquery-tooltip-responsive-mobile-friendly" rel="nofollow ugc">this article</a>. For an example (and an explanation why), please read 
the <a href="http://terrychay.com/article/this-is-my-tooltip.shtml" rel="nofollow ugc">introductory article</a>.
You can add a textual tooltip to anything simply by adding a <code>rel="tooltip"</code> 
and a <code>title</code> attribute with the tooltip content, just like you’d expect with 
regular HTML. It also supports shortcodes to generate them. Use the following 
shortcode: 
 [commentary text=”TOOLTIP TEXT HERE”]TARGET HTML HERE[/commentary]
For backward compatibility reasons, any tags with <code>class="commentary" title="tooltip"</code> are similarly enabled.
<h3>Arbitrary section</h3>
This is an arbitrary section. 🙂

Terry's Commentary

Enables response/mobile-friendly text-based tooltip/commentary popups.

Cart Donation for WooCommerce vs Terry's Commentary