This is isn't directly related to NetBSD/sparc, but I didn't know of
a better forum to ask, so:

We have a bunch of Sun Ray 1 boxen (Sun's "thin client" terminals) we
aren't really using for anything. Does anyone know what's inside these
things (most of the interesting chips have heatsinks glued on) and
whether they (the Rays themselves, that is) can be made to run some
useful OS?

 -v