Tiny slide projector, Diapod, in UK.
This is one of these:
It works great, runs cool and is lovely either as a bit of home decor, displaying a slide on the wall, or previewing slides, or even doing a slide show if you don't mind swapping the slides out for every shot.
It's a nice bit of kit, and this too is part of my "Moving to Australia" sale. New, they're 95 Euros, which is about £75, so I'm going to ask for £45 for a quick sale. I can send in the UK for £5, or internationally for £15.