User blog comment:Thailog/Ep. 203 "Alienated" discussion/@comment-1038387-20120511195639/@comment-1038387-20120511212118

They aren't obscure, they're classic, Silver Age villains. Okay, they're obscure.


 * The diamond is probably the Star Diamond from Justice League of America #4
 * The blue thing is Doctor Light's weapon from #12.
 * So, still unknown are the samurai sword on the left, the ball and staff in the rightmost showcase, and the organ.