Starter kit for a young Youtuber

[8IKERDAVE]

My 7 year old lad has decided he wants to start recording YouTube videos. His passion is lego building and he wants to start filming himself building / talking about lego.

Quite possibly a fad but I thought it would be a nice hobby to encourage so considering getting him a little setup for Christmas. I don't want to spend a fortune because....fad, but on the other hand don't want to buy some nasty Chinese kit that will just be frustrating to use. We have a Mac for editing so it would just be a camera and mic presumably. Any advice welcome!