My oldest son (the only one that's shown interest in programming) really liked Scratch. One feature of Scratch that I didn't expect to be part of the appeal was

My oldest son (the only one that's shown interest in programming) really liked Scratch. One feature of Scratch that I didn't expect to be part of the appeal was how easy they make it to share your work. Every time he build something, it was trivial for him to share it online for friends and strangers to see. He wasn't upvote-obsessed, but I do think that social-recognition element was a plus