https://woocommerce.com/products/free-gifts-for-woocommerce/

Award Free Gifts for making purchases on the siteFree Gifts can be automatically added to the user’s cartCustomers can choose their Free GiftsAdmin can create any number of rules in advanceFree Gifts rules can be configured based on Cart Subtotal / Cart QuantityAdmin can manually offer Free Gifts to any userMaximum number of Free Gifts per order can be customizedOption to restrict Free Gifts if a WooCommerce coupon is already applied in cartOption for the admin to restrict multiple quantities of the same product being chosen as a free product

Changelog

* Fix - Gift Products were not added in the Automatic Gift mode

* Fix - Conflict in the Carousel display mode when the criteria met without page refresh