Looking to make a cheap and easy phase plug? I made a pair today from a short piece of PVC pipe and the plastic cup from a toy slot machine. Total cost was probably under a buck, and you get to keep the toys.http://pg.photos.yahoo.com/ph/the_hurdy_gurdyman/detail?.dir=6d5d&.dnm=9006.jpg&.src=ph
This is a very transparent plug! 
Dave