Use a LPG detector to periodically monitor the gas level and send alerts using Amazon SNS to subscribed email ids.
This projects shows a simple environment monitor which sends you an EMail when an abnormal weather condition is detected.
If you plan on a vacation, here is a great project to track the temperature and soil moisture of your Plant using dweet.io and AWS IoT.
Air Quality Monitoring that uses the Intel Edison Compute Module, Amazon AWS, Visualization through Kibana, and drones!
Idea is to use AWS IoT button as a switch when pressed sends notification to the homeowner that someone has tried to enter the home.
Know when your clothes are dry
Nowadays the temperature is rising due to global warming, and we gotta keep track of it. This small application does it for you.