A mouthful of a description for a cool little doohickey that simply sends HD video from PC or mobile device to TV, the PLAiR WiFi HDMI Streaming Video Adapter does its stuff in three simple steps: plug dongle-like adapter into the HDMI port of your TV, install the app on computer or smartphone, and beam just about any vid that’s watchable on your computer. Yes, easy peasy as that. With apps for Windows and Mac, iOS and Android, odds are you’re compatible. Coming this month for about $99.