Acres and acres of land would be mighty appealing. Like a 5,000 sq mile ranch or maybe even 10,000. Nice modern log home with a ridiculously huge heart in the middle, exposed beams, great kitchen and living room, observatory.
I’ve always wanted to start up my own private no-kill animal shelter. Of course I would need a bigger property and lots of money for food and vet visits etc. If I’m rich enough when I’m older I just might do this.
A nice big house with lots of cats, surrounded by trees on at least 20 acres with seperate rooms for hobby stuff, computer room, a walk in closet for me, swimming pool, big kitchen, a wing for when my family visits , a seperate room for tv and movie watching would be nice as well.
I get two bedrooms with nice bathrooms with a tub and shower, but one room has a huge bed with its bathroom and closet; NO electronics, no clock, no window, no noise, no distractions. 
Just me, a boyfriend and a bedroom. Whee.
Legos.
I’ve resisted as long as I can.
The very moment I saw this thread I instantly thought of that guy in Kelly’s Heroes who said he was going to buy a ranch and get “Ten…Twenty…Thirty five Women and let it go!”
Of course a more recent example would be Lord Bath, who has some 90 “wifelets”.
Cleaning supplies.
It is a comforting feeling to have unlimited acess to a bottle of something that is exactly right for removing an oil stain. And another bottle perfect to remove blood or make-up stains. Or having the exact type brush to ruffle up suede leather. Or an endless supply of nice clean cleaning cloths. A steam cleaner. A pressure washer.
Dirt and decay would never treaten me again!
Oh, and books, and clothes. And a garden full of edible plants, herbs and fruits.
Unwanted clothing.