Costumes for the little kiddo

My kid asked me that if possible, I will buy him some costumes next Halloween since he missed the trick or treating for some reason that he’s allergy to some foods. Mostly when it comes to candies, it should be without peanuts, milk and or egg. The next thing that he’s asking from me is his costume this Christmas and he wants it to be a little Santa attire. So, as early as now, I am looking for some costume city coupons so that whenever I will buy costumes for him, it will be in a discounted price. Since I can’t give lots of things to him, I guess I will just have to make it up by giving him his costumes this year. I just want him to enjoy his life as a kid because when he will grow big, it will be a totally different life.