Re: If I could have a dollar for every time…
This fella shows the things he has removed from the CD slot from his Mac Mini, courtesy of his young children. His other blog entries show him to be a very bright man indeed, as I'm sure his children are. I mean, primary schools have toys where the child is expected to place blocks through slots, and putting foreign objects into CD slots seems to be a continuation of that game.
In previous decades, VHS machines suffered similar fates - I think you could even buy aftermarket panels to child-proof the cassette door. Small toys not too bad, biscuits and jam less so.