Outdoor solar light bottle cap launches

The LightCap 200 is a clever, weatherproof light that turns your water bottle into a solar powered lantern.

The cap fits on any standard water bottle with a 2-inch wide mouth, including those from Nalgene, Camelbak and GSI and claims to be the lightest, brightest LED cap available.

On sale now in the US, it's available in a coupla colours for $20.