Trick-or-Treating is the most universal tried and true Halloween event out there. Children in costumes get candy at each house when they go door to door crying "Trick or Treat!" Parents and older kids can escort the younger kids around the neighborhood. Of course they should put on their best Halloween costumes too. In order for this whole scheme to work, somebody needs to stay home to hand out the goodies.
Obviously Halloween is way too much fun to be limited to just one night. You need weeks, if not the whole month of October, to prepare and celebrate the spookiest holiday of the year. http://vintageholidaycrafts.com/