Remember Connect 4? It’s a fun little game in which players try to, well, connect four colored disks in a row. This is an easy build that you can do complete in an afternoon. Dealing with 42 holes and 42 disks gets a little monotonous though. But just remember: 42 is the answer to life, the universe, and everything.
If you would like to try one out, here's my template to get it all set up.
-- Entertainment for mere mortal woodworkers. http://www.WoodworkingForMereMortals.com