Not to sound like one of those people, but a bidet. It hasn’t eliminated my use of toilet paper, but certainly has reduced it, while leaving a squeaky clean feeling. I miss using it while away from home nowadays.

Other things are eye masks (I have sleep quality issues) and ereaders (never moving with ten boxes of books again).

I’ve had an Xperia S and Z5. I loved both phones because they were well designed aesthetically, both hardware and software, in comparison to the competition at the time such as the early Galaxy S models. As part of their UI skins, they also had some thoughtful features and some hardware features which at the time weren’t so common, such as side fingerprint unlock with the later models. Nothing truly revolutionary, true, but just a well rounded experience, and at least with their early models, worth the slight price premium.

Then Sony stopped selling their phones in Australia a few years ago, so that was that. :(