Connect Four

See the playing rules and history of the game on Wikipedia:
http://en.wikipedia.org/wiki/Connect_Four

It makes a nice gift for friends, you can also erase the circles from the bottom of the grill support and you can write in a nice happy birthday wish, for instance.

Print the components, slide the grill into the vertical holder, then you are ready to go! When you are done with the game, lift the grill, let the discs fall into the tray, then start the re-match! At the end, you can deposit the discs inside the column to make sure you do not misplace any of them while the game is in storage.