Not much. I am not into pagan holidays, although some of the so-called Christian holidays have infused some pagan influences. Either way, I don't want to celebrate the day. This year, no little motley clothed beggars have knocked on our door. If they do, we still accommodate them. Some years we are more apt to cooperate than others. Some years, we have given flyers and gospel tracts along with a hand out.
What October 31st means to me more than anything else, however, is the anniversary of the day we closed on our first house. I wanted a house for years and couldn't afford one. The timing was right for us on our present home, so we went for it. We closed on the house on October 31st, four years ago. We moved in that afternoon and spent our first night there that evening. We had some people knock on our door in Halloween costumes that night, but we had to explain that we just moved in the same day and were not exactly prepared for them.
Anyway, the house thing is a bit more meaningful to me than anything else. That is how I remember what day it was when we closed on the house, it was Halloween Day.