Smarties fractions! My class loved this. There was no printable but I typed one up in about 5 seconds. When I asked them to get out their glue they were all deflated "you mean we can't eat 'em?" : ( they all worked a little harder when I told them I'd trade them a new pack of smarties for their finished paper.
Dr. Harold "Sonny" White is still working on a warp drive at NASA's Johnson Space Center. His work is still in the experimental stage but that doesn't mean he can't imagine what the real life Enterprise ship would look like according to his math.