Just when you think you've seen every design of drinking vessel under the sun. Apparently back in 2009, creative agency Wieden+Kennedy designed a novel cup for ESPN and NASCAR. The track giveaway item is shaped in such a way that you don't have to take your eyes off the track as you drink from it:
As silly as it is, I'm actually kind of surprised it hasn't caught on at sporting events. I think we've all seen people in stadiums spend money on worse!