I have not run this yet, but I will!
ftp://gdead.berkeley.edu/pub/gdead/miscellaneous/NEXTSTEP/
IkoBackO v1.0a
IkoBackO is a NEXTSTEP BackSpace screen saver module.
It only works under NEXTSTEP, so don't waste your time
if you have a Mac or run DOS.
It will work on either black (NeXT) or intel hardware.
To install, take a copy of the file IkoBackO_v1.0a.tar.
run:
gnutar xvf IkoBackO_v1.0a
This produces a folder IkoView.BackModule which must be
moved into the BackSpace.app wrapper.
comments to Patrick Hester - ph@pencom.com