Some I'd like to try some day:
The playground of my old elementary school (at night when there are no kids around)
On a golf course, with the sprinklers on, in the middle of a summer night
In the confessional booth of an empty church
On the hood of a Ferrari in the showroom, in front of the floor-to-ceiling windows that face a main road
The walkway of a billboard near a major interstate highway
Back seat of a police car (maybe fhqwhgads will lend a fellow TFP'er his work vehicle for a bit
)
Against the stage at a concert, being pushed together every time the crowd pushes forward
I'll think of more later