Very Christmassy crossword

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Across
  1. 1. Something that goes up top of a Christmas tree
  2. 4. A long sock that gets hung up for presents
  3. 5. Something naughty kids get on christmas
  4. 6. Someone that helps Santa makes toys
  5. 8. A jolly and red suited man that delivers gifts
Down
  1. 1. A symmetrical ice crystal
  2. 2. Something that helps santa deliver presents
  3. 3. Something in a shape of a human with snow
  4. 4. Something that Santa rides to deliver presents
  5. 7. Something that's a sphere that goes on a tree