Ring Pocket Lamp RIL50

Best buy

You’ll have no problems finding somewhere to stow our winner as it’s no bigger than a large pen. There’s even a pocket clip.

It also contains a magnet, making it easier to place the light, while leaving your hands free to work. Not that direction is really critical, as those eight LEDs give a super-bright, broad beam that’s still powerful enough to light your way for walking. A cracking price seals the victory.