Beefy CPU, couple TB of HDDs and an SSD to boot off of: (comfortably) host your own private cloud. And probably a <whatever social/messaging solution you prefer> instance for your friends & family too if you're feeling adventurous. Via authenticated Tor Hidden Services, for optimum easy-safe ratio.

Now the value of a private cloud is a subjective question, true, but personal experience suggests having it right there on home lan encourages practical use, especially in a shared flat.