Complex sentence: In some Christmas stories, the contents of the Christmas stocking are the only toys the child receives at Christmas from Santa Claus; in other stories (and in tradition), some presents are wrapped up in wrapping paper and placed under the Christmas tree.
Split into simpler sentences: In some Christmas stories, the contents of the Christmas stocking are the only toys the child receives at Christmas from Santa Claus. Other presents are wrapped up in wrapping paper and placed under the Christmas tree.