DSLR Tiny Spy Camcorder

If you thought those micro four-thirds cameras were pricey for their size, get a load of this Japanese spy camera. Considering it costs $120 and weighs just 12g, it might just be the most expensive camera per millimeter ever.

The actual size is 2.5cm x 2.5cm x 2.6cm, and it shoots video at 640 x 480 resolution. Photos can be taken too, at 1600 x 1200 res, plus there's even a mono speaker within that tiny casing. It takes microSD cards for recording onto, and has a miniUSB port for transferring footage to PCs. You can find them here.