At Fry's electronics I found the perfect solution—12-inch CCF lighting tubes and power supplies intended for illuminating fancy clear-sided desktop computer cases! They come in several colors (obviously the white tubes are best suited for this application—P/N 6200540 at www.frys.com). The lighting tubes cost only $6 each, pull five milliamperes, run on 12 volts, have a wiring harness, and are encased in a clear tube covering that is tough and only 1/2-inch in diameter, so they are easy to use in a confined space. Each power supply can drive two tubes and don't seem to produce any discernible RF noise. I hid some behind the fiddles for indirect lighting.