I like the Halloween customs of costumes, going around the neighborhood, and pumpkins. I don't like the candy though. It's not healthy. And if it's not fair trade, you are contributing to some bad practices.
I like the Samhain tradition of remembering the dead. I'm not sure it fits with the Halloween traditions though.
I was reading tonight about Native Americans, that they grew beans, corn, squash, and strawberries. Strawberries are for a different season, but how about we celebrate Thanksgiving by eating beans, corn, and squash, thinking about the history of the country, and thinking about things we are grateful for.
Since reading Druidry and the Ancestors, I've been thinking in terms of druidry being about being rooted in our ancestors, where ancestors is all who have gone before. Samhain can be about remembering our personal ancestors, and people we knew personally who have passed away, while Thanksgiving can be about remembering the people who have lived on this land.