Everybody knows about the current discussion about Vuvuzelas at the current soccer tournament happening in South Africa, right? If you are serious about getting rid of them but don't wanna wait until they are banned from being used in stadiums, here are two possible solutions, both called "Vuvustop":
1) Create an electronic audio filter, see e.g.
this article for a description on how to create one (in German).
2) Use the cheap alternative shown in the pictures below. Note the hilarious description of various usages in the second photo.