Great things happen when you explore the WotC site-of-old.

Flipping through the hypothetical pages of the interweb around there I discovered an 11-part series of dice games for to be played for fun.

I've used Deceit to lure my players into becoming pirates which they now enjoy the benefit of, but I'm sure you can use them to just sit and wait for other players to show up before games or in between bouts of eating food or whatever else.

http://www.wizards.com/default.asp?x=dnd/arch/dg