More seriously, I'm finding the Zero W's amazingly useful in my day job! I can hook them up to the embedded systems I'm developing and use them to log data, control inputs, and even display stuff in real time on various miniature monitors I've accumulated. I power them using the sort of power banks that people use for recharging their mobile phones, which seem to last forever (I suspect they'd power a Zero W for at least a couple of days straight if used continuously).
The really great thing is that I can log in to the Zero W's over wi-fi using SSH from my laptop. I can have multiple sessions going in different terminals, copy stuff back and forth using scp, compile code actually on the Zero W itself, etc etc. Top stuff!
The moment I really felt "I living in teh future!" was when I first SSH'd into one from a terminal app* running on my phone and kicked off a program to log some data during a test. It's often a pain in the arse to use my laptop for that when I'm outside, especially when it's raining. It's so effortless to whip out my phone and tap out a command or two to kick off a program, kill it, or take a look at how much data has been accumulated. If I wander out of range it'll all reconnect again when I come back, and I don't even have to start a new SSH session. It's flippin' magic!
Anyway, I thought people might find it interesting to hear how I'd actually used this stuff, rather than my usual "imagine the possibilites!" -type posts.
* I use an app called JuiceSSH, which has an extra pop-up keyboard above the stock Android pop-up keyboard that contains arrow keys, sticky control key, and useful punctuation that's handy for entering shell commands.
