The VR targets also have to be created physically and I want to light them up. I'm going to try a version of the 3d LED illusion lights for the targets.

These can easily be laser cut and etched, and hopefully don't need too many LEDs to still look ok. They should also be small enough for the micro servos to move around.

My version in VR with bowling pins:

And the physical template to be cut and etched in acrylic:

I added a bit of angle to the version on the left for a better 3d effect. The additional lines sell the illusion more, if needed I can adjust the VR model to match.