Both of my girls (3 and 4) have Kindle Fire HD tablets. Amazon has a program called "free time", which locks the tablet into a "kids internet". They can only access child oriented apps and games. Meanwhile we use the HDMI port to stream Netflix and Amazon prime movies when we're on the road, as well as at home. My wife and I also use them to read with. With screen protectors and Otterbox covers they're pretty tough.
Forgive my ignorance. How are these streaming when you are on the road, wifi hotspots?
Curious, we have one of those factory in car dvd systems, which I thought was a good idea when I bought the car but it really has led to a lot of ruined dvds kicking around the car I think they play Frisbee with them.