It's been so long since I played that I don't remember most of the game. Two things stand out, though...
Room: I don't remember the name of it, but it was one of the Pirate-themed rooms. It was a cave (or something) and it's where I kept all my gold items.
Furniture: This is a hard one... I love the Ice Cube chairs, and I stockpiled hundreds of those. But then, I also loved all the Disneyland exclusive furniture (I had all 30 cards at one point). My Golden Random Number generator was cool... but if I could choose only one, it'd be the Golden Monsters, Inc. teleporter. I had soooo dang many of those, I ended up making a teleporter maze that a lot of people liked.