What is the theme?: Sleepover

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Across
  1. 3. Cozy item you snuggle under at night
  2. 7. Inflatable bed for guests
  3. 8. Snack often eaten while watching movies
  4. 9. Late-night frozen treat
Down
  1. 1. Types of joking calls, often anonymous
  2. 2. Device for playing music
  3. 4. Nail polish activity
  4. 5. Talking in low whispers about others
  5. 6. Movie marathon favorite genre
  6. 8. Pillow fight essentia