I am the mother of 3 boys aged 10, 9 and 6. In the past we have dressed up in "nice" costumes and even gone to fall festivals at church. A few years ago, i noticed our church was even getting into a little of the scary side. (Spider webs and lights in the trunks). As a result, we stopped doing that. I off set it by buying my kids their own candy. Now, every year we turn on every light in the house, we even play nice, God glorifying music. I hand out only the large candy bars and the kids tape on each bar "Jesus loves you" I also throw in Bible tracts if I have them. We pray for all of the children who come to our home. We especially pray for the kids wearing the scariest costumes. Before all of this, I plead the Blood of Jesus over my house, children and property. My kids really feel like this is a ministry for them. They still insist that I buy them candy, but they have no problem not dressing up and going out to get candy.
I hope you find this helpful.