Accept donations in woocommerce with amount specified by the client, so they can donate any amount they wish . Donation can be shown as a usual woocommerce product or on the "cart". If the client skips the "cart" page or goes directly to "checkout" and hasn't made any donation, a link on the "checkout" will be shown so he can make a donation. Plugin for woocommerce donations that easily integrates with the template design you have already. Possibility to chose an existing non-shipping , no-taxable , not viewable OR to create a new product with the above properties from the plugin itself. Every step explain of the woocommerce donation is explained on the documentation with screenshot. Just enable the woocommerce donations plugin and you will find the "Add Donation" field on the cart