One free Halloween story could be about a friendly ghost. There was a little girl named Lily who moved into an old house. On Halloween night, she saw a soft glow in the attic. When she went up, she found a friendly ghost named Casper. He showed her all the hidden treasures in the attic that had been left behind by the previous owners. They became friends and every Halloween, Casper would come out to play with Lily and they would share candies together.
Here's another free Halloween story. In a small town, there was a Halloween tradition of a pumpkin race. Everyone would carve their pumpkins and then set them on a small hill. The first pumpkin to roll all the way down to the bottom of the hill without getting stuck would win. A young boy named Tommy had a very small pumpkin. Everyone thought it wouldn't stand a chance. But Tommy was clever. He carved it into a shape that was very aerodynamic. When the race started, his little pumpkin zoomed down the hill and won, much to everyone's surprise.