Saw this auction for a pair of H960 blank front panel clips:
http://www.ebay.com/itm/391207099375
and though I'd pick them up... until they went for $30 (including shipping),at
which point I decided I'd go back to my previous plan to fabricate some out of
some scrap wood, and a pair of screws.
Time to find someone who can do injection molding... (I don't think these
could be 3D printed, the necks of the bulb-heads are under a lot of stress
when removing panels, they often snap off; will 3D printed parts be that
strong?)
Noel