Smart Home & IoT is already mass market – almost every device from dish washer to fridge you find in retail has a wifi module and could be configured to access the internet.
The Things Network
My The Things Network page showing the LoraWan Gateways i currently operate https://www.thethingsnetwork.org/u/bejaehringerhof
Weather Station project
Currently I am running several sensors collecting a set of different weather, environmental and climate data. Some of them i am making available on this website: http://wetter.bejaehringerhof.net/.
Raspberry PI Projects
For people interested in the things happen behind an app some useful information and inspiration what you can do with one (or more) Raspberry PI and some sensors.