The Sphero BB8 post
One of my first robots ever was Sphero BB8.
I feel that it's really cool and nice. Lets first talk about its insides. It has a magnet inside it that helps the head stay on while the ball moves. If its running low on batteries, the light on the inside flashes red, when it is charged, its blue. Its also really fast.
Would I recommend this to 7-year-old kids? Oh yes I will.
By the way Sphero BB8 has a little Christmas video to show you too:
https://youtu.be/fspv58WpHmU