What is it?

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Across
  1. 2. It's spelled with an "a" in American English and an "e" in British English
  2. 4. Jake's favorite Joshua Hyslop song
  3. 6. Word shared by Harry Potter books #2-5
  4. 7. Retro music format with grooves
  5. 10. Self-service space for your surplus possessions
  6. 11. What this gift is for
Down
  1. 1. Trendy retail chain known for its eclectic mix of fashion and home goods
  2. 3. Like Maggie, Kenny, or Aaron (none related)
  3. 5. Like a rare Pokémon card with a finite number produced
  4. 8. EP & ___; trendy L.A. rooftop cocktail bar owned by Swedish House Mafia
  5. 9. Like Damon, LeBlanc, or Groening (none related)