Nah, dogs can't eat grapes, raisins, chocolate, onions, or garlic. There may be something I'm leaving out, but those are the big ones. They can't really process lactose, so it'll give 'em stomach problems and diarrhea, but not very dangerous.
My old dog had a fetish for dirty nappies/diapers,the fuller the better,she would be straight in the bin as soon as turned our backs.... think yourself lucky.A teared up shitty nappy/diaper is not fun to clean up.