Hi K8
Have a look at this IIS
article describing a
portable observing hutch.
Figure 1 shows a single fluoro light with a red gel filter that provides a large area of even illumination. The red gel filter was cut from a sheet of stage lighting filter material, so it is quite tough.
Figures 2 and 15 show daylight views of the fluoro, which is mains operated.
Cheers
Dennis