No thoughts on the mirror images, hmm? Well if no one likes that, how about pictures by candlelight. Of anything. The best one I've ever seen was an infant sleeping with just her sweet face lit by a small candle, the blanket over her sort of faded away into darkness. This was a great potrait!!
My own best attempt at candle lit picture was a still life, a framed wedding picture, on the table in front of it~2 wine glasses and a rose...........
Anyway, just another thought.