Lickable wallpaper/cab art, the snozzberries taste like snozzberries!
Wonkatania or Wonkamobile that you could hit
Rotating gum making machine with targets/traps.
Goose that laid the golden balls!
As stated already get rid of the metal box/Wonka office
Need actual spinner that is candy cane or similar
Second on the bubble machine
There are so many cool things you could mod this with