If I were rich...  

I would have a shallow indoor...
I would have a shallow indoor pond with black and white eels in them.

Some kind of floating
cantilevered stone or steel staircase. So cool, those.

.
I also want an albino peacock.

I'd buy a small wooded chunk of Central Park (NYC)
including a stream... reproduce Falling Water on the property... then stock the stream with black & white eels.

A retro pizzeria in my...
A retro pizzeria in my living room. But I'd get fat.

A pair of Kangaroo chairs by ...
A pair of Kangaroo chairs by George Nelson & Associates ... with black and white eels motifs stitched into the fabric.

Giant
Kay Bojesen Monkey.

In all seriousness, I love...
In all seriousness, I love the Saarinen/Girard Miller house more than anything I have ever seen. From the structure, to the landscape, to the interior design. It is my absolute model of perfection for residential architecture. It successfully exudes a feeling of being high end while simultaneously displaying a whimsical playfulness (perhaps that only Girard himself could create).
I would HAVE the Miller house or would build using it as a strong influence, if not an outright source of plagiarism.
The "conversation pit" makes it that much more appealing. What a place for a kid to grow up!!! Fort heaven in architectural bliss.

I...
Albino peacock! That's wonderfully bizarre. But I like food more than animals, so I would definitely go for the pizzeria - only if it comes with a proper wood oven and an authentic Italian 'pizzaiolo'.
To keep the Italian mood going, I guess I'd furnish it with a few of these tables http://sessantuna.cassina.com/en/#/home/
Expensive but truly unique!

The photo you tried to post...
The photo you tried to post...
http://sessantuna.cassina.com/en/#/home/

Fair play, woody...
Monkey money is always money well spent.
Me, I'd skip the extravaganza...
I'd do nothing.

Artichoke
I would buy an Artichoke lamp from Louis Poulsen.. Loooove this pendant..
If it was for an extravaganza.. Perhaps the gold version.. 😛