I checked out the Tube, and it looks good (though more like a primitive bug than a tube). The reviews on Amazon show many unhappy people, though, who said it was not durable and failed in less than a year, all pointing to a wire breaking off the board.In addition to the Tool 2.0, I'd also give him a Nitecore Tube on a lanyard.
I have a Photon II that has been rattling around on my keychain for more than 15 years, never a problem. Not as versatile a light, however.