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.
PART II - An IoT system based on Amazon Web Service (AWS) that simulates an Environmental Station using RIOT-OS and MQTT-SN
RIOT-OS application on IoT-LAB sending virtual/real sensors' values to TTN via LoRaWAN, and the TTN-AWS IoT integration.
Using Sigfox solution from Unabiz (an Arduino shield) in a mouse trap to push SMS and email thru AWS IoT core and store count in DynamoDB.
PART III - An IoT system based on Amazon Web Service (AWS) that simulates an Environmental Station using RIOT-OS, LoRaWAN, TTN and IoT-LAB
Use the AWS IoT EduKit to create a device that can monitor Galvanic Skin Response, Microphone and Gyroscope data and send it to AWS cloud.