To make mint simple syrup combine equal parts sugar and water and bring to a boil. Remove from heat and let a handful of fresh mint leaves steep. Strain and store simple syrup in refrigerator. See this flavored simple syrup post for more detailed instructions.
I have used both canned peaches and peach pie filling. Both are good, you will have a little bit more puree with the larger can of peaches in heavy syrup.
Find it online: https://www.imbored-letsgo.com/peach-bourbon-popsicles/