Didn't do perspective, but...
Last year we had an RTA person come in and show us some slides for a talk on driving. A pair of tem consisted of a small poicture of a road in front of you and a car driving ahead... and then the rest of the picture filled in with pedestrians, open car doors, lots of things to be wary of...
If you could find it that is...
Actually, there's b/day cards w/ the hedgehogs that always gets run over crossing the highway... [you'll have to figure out the artist's name on your own.]
In one of them, I think, has a hedgehog holding up a sign "Armaggedon is nigh" while a person was hammering out a wheel in the background. Would that work?
Some of the humour ones are great for before/after changing perspectives...