You know Rick, I have a roll of Cosmos holoptic cells somewhere that I've had for years and I'm having the hardest time finding them. They were the Superman ones. When they turn up I'll send you one.
Atari Cosmos is exactly what I was thinking of in terms of handhelds and tabletop games. Touch Me was good and led to Simon, but Atari had a lot of other opportunities to do something fun and always opted to focus on the VCS instead.
The Spector concept used a holographic cylinder, and the Atari handheld mock-ups would have included portable versions of Space Invaders and Breakout. They looked to be a nice start and could have been a lot of fun.