To make ice cream mix-ins with an ice cream maker, you can start by choosing your desired mix-ins such as chocolate chips, nuts, candies, or fruit. Then, pre-chill the mix-ins by placing them in the freezer for a few hours.Next, prepare your ice cream base according to your recipe and pour it into the ice cream maker. Let the ice cream churn for a few minutes until it starts to thicken.Once the ice cream is almost done, stop the machine and quickly stir in the pre-chilled mix-ins.