My only * to this would be Google Chromecast devices directly if you already have them. They have an option (buried way under settings) to make the home-screen

My only * to this would be Google Chromecast devices directly if you already have them. They have an option (buried way under settings) to make the home-screen apps only. > Turn on Apps only mode > From the Google TV home screen, select Settings Settings and then Accounts & Sign In. > Select your profile and then Apps only mode and then Turn on. It also makes the device significantly more performant.