CC'ing cylinder heads

Besides the kits at Summit/Jegs I'd love to hear how some of you guys have cc'd the chambers on cyl heads

I went looking for syringes on the net and easily found 70cc, but was looking for 80cc, just to have. A plastic plate or CD as was mentioned elsewhere which can be easily found locally

Wondering what the creative minds out there (read hot rod mechanics) have come up with