Flo
Flo is a side project I've been working on for a few years now. It's a smart water bottle that connects to your mobile device and records how much you drink throughout the day.
You can view the iOS prototype for the app here, built with framer : http://share.framerjs.com/sl1eieavlt7y/
Flo adjusts your recommended water intake based on how much activity you record through apps such as Strava and Runkeeper and what the weather is like that day (i.e. if it's hot). You can see these additions sliding in as cards at the bottom of the screen.
Also attached is a photo of our first prototype of the Flo water bottle made back in 2013, running a water flow meter attached to an arduino board and bluetooth board to transmit the data across to your smartphone.