I get an email if the weather shows it'll rain tomorrow. That's kinda nice. Also, anything I star on Google Reader saves to Instapaper, but that wont' be useful very much longer.
Yeah, I find automatic email / notifications for things like weather help you acquire an ambient, almost sub-conscious awareness of things you wouldn't be able to glean from the environment. Not IFTT, but I like PM software like Trello for this too.
I wonder about other things that are nice to have an ambient awareness of. It can't be too many things, otherwise you risk overwhelming yourself with notifications / beeps / things to check / glowing orbs, but I bet we all have a bit of room for more of that.
Even better than IFTTT for weather is the iOS app Dark Sky. I have it set to give me a push notification whenever it starts raining in my area. THAT'S a useful feature so I remember to grab an umbrella if I don't notice the rain yet.
That was my initial experiment with IFTTT, too, but I got annoyed by the inability to schedule "recipes", so I'd get said email (or tweet etc.) at a specific time. There is a date & time event source, but as you can't chain predicates...
If IFTTT even goes down, you can circle back to http://umbrellatoday.com/. Enter a location, and you can register an e-mail address (of mobile phone) where a message should be send to.
We have an in-joke in the Pacific North West about our 'jacket summers'. I use IFTTT to automatically post what to wear the following day. This being said, it's not very popular :)
I wonder about other things that are nice to have an ambient awareness of. It can't be too many things, otherwise you risk overwhelming yourself with notifications / beeps / things to check / glowing orbs, but I bet we all have a bit of room for more of that.