I tried to provide a balance point to this discussion, mainly due to the fact that packing the clock into the suitcase wasn't smart (even for a 14yo).

Google 'suitcase bomb' and you'll get endless results. Google 'Arduino enclosure bomb" and you won't get much.

I'm not convinced the kid didn't know it was looking like something from a movie, and I think he was aiming for that look, but he won't admit it. Why do I think this? Because I was 14 once too, and studied electronics just like him. Something that looked like a Suitcase bomb is something I'd want to show my friends.

His clock was mains powered too. Awful design even for a 14yo.