Ending today, Groupon offers the factory-refurbished Google Chromecast Streaming Media Player for $25. Apply coupon code "TRIPLE" to drop it to $22.50. With free shipping, that's a buck under our mention from last fall and $7 below the lowest total price we could find for a new one. It attaches to your HDTV's HDMI port and connects to your wireless network to receive streaming online video, music, websites, and more from your smartphone, tablet, or laptop. It also allows you to use your Apple or Android device as a remote. A 90-day Google warranty applies.