1. Trampoline floors.
  2. A soda fountain.
    Not, like, a soda fountain. But a fountain. With soda.
  3. Doors disguised as bookcases.
    Like, everywhere.
  4. An underground garage from which I can leave the premises Batman-style.
  5. A smart doorbell that does the scary "dun-dun-duuuuunnnnnn" music when any authority figure (like a parent) arrives.
  6. Firemen pole.
  7. A huge crazy twisty tube slide that goes outside then back inside and lands in a ball pit.
  8. A Wonkavator.
  9. Vending machines filled with candy and chips and such that never run out and don't require money.