63. Replay XD1080

Officially the world’s smallest full-HD helmet cam, this straps to your helmet, car or bike mount to capture “the extremity”. A 4GB microSD card give you gives you around 45 minutes of recording time. If you’re ready to share with the world exactly how you managed to hit four trees in one manoeuvre, the mini HDMI out will hook you up to any waiting TV.

The clincher: Tiny thing, awesome vids

Price: £185

Link: http://www.replayxd.com