A:AnswerThe easiest solution would be to buy either an Amazon Fire TV Stick, Roku Streaming Stick, or Google Chromecast with Google TV. Then allow the streaming box to control your tv via HDMI-CEC that way you can control the tv with the streaming stick’s remote for volume, power on/off, etc. the HDMI-CEC functionality should work out of the box for most of these devices, but if not you can enable them in the setting of the streaming box.
A:AnswerI wouldn’t place anything directly on any TV screen as they are all susceptible to scratches! Your suggestion of using plexiglass would be the best solution.