It is certainly illegal to obtain a peice of Government-issued identification which has been altered or created as a replica to the original; however if you are looking for a Novelty ID, I know there was some store on Yonge Street near Grosvenor where you go downstairs which sold them -- mostly with themes like "California" or "New York". This was atleast 10 years ago, so I don't know if the place exists anymore.
It is against the rules of this forum to provide information on breaking the law.. so there's nobody here which can assist you in obtaining an altered or fake Ontario Drivers License if that's what you're after.
I don't think that this would be a cop as this would constitute entrapment wouldn't it?
That being said, like I would ever try and help someone commit an illegal act. Especially online where it can be documented for everyone(the police in particular) to see.