Depends on where you get them. If in the rural areas of the country, they tend to be found in just about any gas station, but as you stated the patterns tend to be the same ones in most if them. Those patterns being the American flag, the confederate flag, the jolly roger, and the old standby red and blue ones with a, I believe, fleur de lis pattern.

But, elsewhere you can find them at gift shops, theme parks, theme restaurants, etc. With all sorts of licensed patterns, such as animated shows, video games, and licensed properties such as Star Wars, Disney, etc.