Cheap flexible mount for video lights

I am making a gopro mount out of upvc pipe which will look a bit like this:

http://www.instructables.com/id/UnderwaterStability-Rig-For-GoPro-Camera/

I want to attach a light on the top of each grip with a short flexible arm, something around 3" - any sugestions on the cheapest way to do this?

Cheers