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First idea: Peppermint "Tea". Boil (or warm) 1/2 c. water with 1 T. coconut oil and 1-2 drops peppermint essential oil. Drink twice a day. He said this helped soothe his throat too, which was a bonus!
Second idea: Coconut Balls. 2 T. finely chopped nuts (I used almonds and pecans), 1 tsp. raw honey, 1 T. coconut oil, 1 T. mini chocolate chips. (You could use oats if your kids won't do nuts.) Form into a ball or just mix and eat out of a bowl. (Eat 2 a day.) I hope these might be helpful to someone else. Thanks again everyone for your posts!