Light Blaster, that's a good one, thanks
There's a cube shaped prism that breaks the beam into thousands of points. I'll be damned if I can find it though Googling or other.
I've come across a few things that might work, but there's no way to compare a lot of these since the brightness is often not specified, or, if it is, is unclear how it is measured.
On the plus side, some stuff is cheap enough that it would not a be a great loss if it did not work.