Point Grey FIea3: Tiny d

    Sometimes a gadget comes along that you're definitely not going to buy, but that gives a little glimpse into the future. The Flea3 is one such device: it's a video camera in a tiny 3cm3 cube. You could fit two of them in a wine glass, without lenses attached. And it shoots 4K video. Not very nice 4K video, mind — the footage, which it outputs via USB3,0, is more suited to industrial applications than your telly — but pocketable 4K is definitely on the way.

US$950, ptgrey.com