Well I finally got the project fully done and there's a photo log of sorts up at Flickr. Probably easiest to view as slideshow - hit pause right at the beginning, hit the "show info" button top right to get the descriptions superposed on the images, and then click thru at your leisure at the bottom.
http://www.flickr.com//photos/rtrski/sets/...933420885/show/
Ignoring the microflash (which I'll document in another set soon), I spent all of $25 to make this fiberoptic cable (and there's a lot left over since I bought 10' of the cable). Parts used are a 1/4-20 bolt, rubber flat gasket, a small chunk of plastic, some 2-part plastic fusion glue, a couple grades of automotive and normal sandpaper, a tiny piece of 1/8" ID (after heating) heatshrink tubing, and the plug that came with the z240 strobe in the first place.