Happy Birthday, Chromecast! It's been two years since the tiny HDMI-based TV dongle launched at Google, and Google wants to celebrate. To do so, they've delivered a collection of freebies or otherwise interesting trial-offer sorts of gifts to the public. To those that already have Chromecast or Android TV devices, that is to say. These tiny bits include everything from 90 days of Google Play Music Unlimited to a week of Hulu. Meanwhile Chromecast itself is at just about the lowest price it's ever been, sale or no, with deals for doubling down.