Shooting in an antique railcar and am looking to tape or velcro a practical light to the wall. Ideally, its would be battery operated that does not have wires protruding, although I could hide them. the windows of the car will be green screened and I am keying with a 1.8 HMI. Check out this shot from Darjeeling Limited as an example of what I'm looking for. Mine of course need to be removable/smaller and not built into the set!