Although it doesn't get much press, one of my favorite features of iOS and OS X is Find Friends. As a dad, I love the ability to keep tabs on where my kids and my wife are. As I write these words, I recognize that sounds creepy but I'm willing to take that label this time.
I've mentioned in the past how I equate Find Friends to Mrs. Weasley's clock and the analogy stands. All the members of my family are frequently dispersed throughout Southern California and, as the dad and husband, I get a certain degree of comfort knowing where they are at. From all of my Mac and iOS devices I can very quickly confirm that nobody is in jail or any other sort of trouble. I like that.
Starting a few days ago, I can also now access the data from any computer. The iCloud.com site has its own Find Friends tool that shows me the same data. While it probably won't be often that I would need to access this data from a third-party computer, the fact that I can is appreciated.