Own your own decommissioned missle silo.
I want a Titan-1 silo, myself. If I become fantastically wealthy within the next couple weeks, I may end up moving to Denver... Seeing as that's where the nearest Titan-1 silo for sale is.
If it happens, the control room is SO becoming a full computer room. LAN party, with a big-ass screen up top showing the server info, or WarGames.
I'd name it 'VaultTek Vault 13'.