I haven't done any of the smart home stuff yet, but I'll probably start adopting some of it soon. The first thing I'll probably go for is a smart garage door opener because I've left my garage door open like an idiot while I'm at work or overnight more times than I'd like to admit.
I want to get a smart doorbell/camera, but I still really don't like the idea of having to rely on some company for storage and such. I'd really just rather have all the video stored on a hard drive at home with no one else accessing it, but I guess that makes it difficult to handle the remote access to view the live video when you're not at home.