Conversation so far:
where did the idea of halloween come from
It is widely believed that many Halloween traditions originated from ancient Celtic harvest festivals, particularly the Gaelic festival Samhain; that such festivals may have had pagan roots
Is Halloween a Christian holiday
Some believe, however, that Halloween began solely as a Christian holiday, separate from ancient festivals like Samhain.

Question: what are the activities
Self-contained rewrite: what are the Halloween activities