From the 'because I can' category of reasons to do something:
I installed flow meters on my beer lines in my keezer, which connect to the keezer temperature controller, which reports back to my home automation server. From any internet-connected computer, I can now see my current keezer temperature and the amount of beer remaining in each keg.
Once I figure out node-red I should get a tweet whenever a keg is getting low or someone pulls a beer while I'm not there.