Using Potent Donations for WooCommerce, you can accept donations through WooCommerce, which supports most payment gateways.
It is quite simple to use the plugin. In the regular WooCommerce product editor’s Product data box, you can choose a new Donation product type. Instead of choosing from a set price, visitors to your site can enter their own donation amount.
By setting a default donation amount and how much it increases, you can control what people can do. For instance, if the increment is set to $10, people can only donate in multiples of $10.