After some good advice on this forum, I decided that showing a bunch of band directors how to make a 110 Volt fluorescent light to insert into metal instruments wasn't such a good idea after all with liability issues and such.
So . . . . . . . . . . I looked around for an alternative idea for my music teacher friends and came up with this:
http://www.woodwindforum.com/forums/album.php?albumid=59
The 12 Volt LED strips can be purchased from "XESPIDERX" on EBay and they cost a whopping $1.00 each! Shipping by airmail from Hong Kong is $1.56 per light and they must be shipped separately for weight considerations.
The 12 Volt transformer was on I found lying around the house. In fact I found 3 that used to go to something and are no longer being used---there may be more if I clean my drawers and closets.
The strips were glued together using "gap filling" super glue. Some of the great advantages of this light besides being only 12 Volts is that it is waterproof, it generates very little heat, it is flexible to go around bell bows and through bari sax "pigtails", and will not break when dropped. As you can see in the comparison photo, it is much brighter than the incandescent rope leak light that Music Medic sells for $17.00.
Should you want to use one on bari saxes, you might want to install a stiffer cord than the one that comes on the transformer so you can "push" the light up into the body through the low C or Eb tonehole.
This should be much safer for my band director friends than the 110 Volt version---especially since most of them are such good conductors. : )