Stir together the butter, peanut butter, brown sugar, baking soda, syrup and vanilla until creamy. Add the oats and stir again. Add the chocolate chips and m&m candies and stir once more. Scoop into 1" balls and smooth with your hands. Refrigerate until ready to eat. Bring to room temperature before serving, if desired. The cookie bites will keep well in an airtight container in the refrigerator for a week or in the freezer for 3-4 months. Enjoy!.