I bought a 2007 MINI Cooper convertible about 6 years ago. 

That same money will buy you a mini castle with acreage in many states, or an oceanfront/lake front/riverfront home, etc.   

I can also use it to take a break from here and go on a mini vacation.

-if sharing food in the fridge/kitchen is a problem, put a mini fridge in their room and tell the to keep their stuff in there.

And if I get displaced, I have $4,000 I can use for a mini-vacation at a nice local hotel :-)At any rate, that's how I'd approach it.  

I don't have a mini-mansion.

There is a mini wall and doorframe on the right side, when facing the fridge, and kitchen cabinets to the left with new granite countertops.

I always suggest updating the hardware like you mentioned, because that can help give an instant mini face-lift to a room.Regarding the appliances, when you say "black package," are you referring to black stainless steel?

There is multiple holes in the walls ranging from tiny nail holes to door handles being pushed through the walls. one set of mini blinds were destroyedThe dead bolt lock set is brokenThe dogs have scratched the inside and outside of the door and trim as well as chewing the cord that powers the back porch light, and has dug multiple holes in back yard against the foundation.

A nice middle of the road option is a ductless mini-split.