Tips & Donations At WooCommerce Checkout Wordpress Plugin - Rating, Reviews, Demo & Download
Plugin Description
The plugin simply adds “Tips” field to your website’s WooCommerce Checkout Form.
It can add it as a native fee and via the Notice box as well.
Once the plugin is installed and activated, you will have a new field in the Checkout Form where your customers can add optional tip&donation.
Documentation
https://guaven.com/docs/tips-donations-at-checkout/