There was a time when home automation was a kind of laboratory experiment, requiring a working knowledge of networking methods, esoteric gear, and a hefty investment just to get started. Now you can test the smart-home waters with easy-to-use and inexpensive gear, learn what you like about it, and then expand your collection without much fear of your devices’ refusing to work together (or everything ending in tears). For the smart-home-curious who just want a set-it-and-forget-it experience, here are some devices we think anyone can use and appreciate. None of these devices require any more setup than plugging them in and then downloading a corresponding app. Once you get accustomed to your new devices, you can start connecting them to other things and find new ways to use them.