Thank you for such a fun and cool project, but please do take into consideration the comments others have made about being sure it's safe: at least if you plan to make a bunch of them and sell them :)
Glad you enjoyed it! I don't have plans to make more and sell them, but the robot is safe–like I mentioned in the other comment it actually moves slower than the speed it does in the video and the servos aren't powerful enough to significantly injure someone.