Flashlights are ok but to really get the correct plane feel you need to step inside a plane board set to the turned shoulder plane.
I made a lightweigt portable 1/2 plane out of two sheets of 8'x4' styrofoam insulation (Lowe's). Cut the half moon using a cheap soldering iron. Hold together with duct tape. You could easily cut in half (for smaller storage) and hold together with duct tap. Prop up with a couple of dowels.
To make a full plane duplicate above and duct tape together.
MB, I'd like to see a photo of that contraption, if you would...
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"Hi, I'm Troy McClure and you might remember me from such films as 'The Greatest Story Ever Hula-ed' and 'They Came to Burgle Carnegie Hall.'"
the advantage of having surfaces instead of just lasers is that you get to set THE ENTIRE CLUB including the shaft onplane. helluva difference. I've built a couple of these bad boys the half and the full. Personnaly i'd make the full even if there are shifts. Randy used to call them my monsters...lol