A lot of the use cases floating around for Alexa are related to making a smarter home. My first step towards achieving this is asking Alexa what the current temperature and humidity is in my house. To do this, I used my original particle-weather-station project.
The project still uses the Particle Photon and a DHT11 sensor. But, instead of visualizing the data on a dashboard, I can ask Alexa for the current temperature or humidity.
To see how it works, check out the source code and video: