"I use MindStorm Lego to entertain my 5 y/0 during the COVID19 shelter in place. He is now building 40 to 50% of the robot by himself. It is rare but he can sit for 3 to 4 hours continuously building. Sometimes I get concerned because, normally, he is easily distracted... but it doesn't happen when he is building MindStorms.
I'm impressed with the entire package. I found it extremely entertaining, educational, and can be a trusted babysitter during pandemic times. Make sure your kid is old enough to understand that he MUST NOT put the pieces inside his/her mouth."