As part of ArtWeekAtHome we created TwitterPoof, a flame effect that was remotely triggered by sending a Tweet to it.  Here is a highlight video of it in operation.

    

Also pictures of the setup.  Propane poofer. ESP8266 development board running Arduino to receive Tweets over WiFi and activate the poofer solenoid through opto22 module, lab power supply for the poofer solenoid.