Choose your favorite cartoon character, either from your childhood or from today. It can be anything from a televised cartoon, to a comic book hero, or even one of the muppets from Sesame Street. You can tattoo this character from a generic picture or from an actual action shot pulled from the pages of a comic book to the freezed-frame of a show. Take time to consider the appropriate character, and take equal time to considering the exact image of the character you want tattooed.
Childhood quotes are generally pulled from nursery rhymes or from the pages of children's books. These quotes can be one word or a phrase and are often only represented partially, with an ellipse either before the first word or after the last. Once you have decided on the script, you then must wade through hundreds of font and style types to choose the one that's right for you. However, always keep in mind, you can design your own script to avoid the hassle of finding one. This can also make tha tattoo a little more personal.
A movie reference tattoo can be anything from a life-like portrait of a particular character or a copy of a tattoo that a character has. For instance, the main character in the film "Memento" has dozens of tattoos, so a hardcore fan might consider tattooing a replica of one in the film. Other true fans of the film will recognize its meaning immediately and others will be puzzled and require explanation which will in turn become a movie suggestion.
If you love music or are a musician in some capacity, consider tattooing the sheet music to your favorite song. This tattoo can take up a lot of space if you decide to tattoo a significant portion of the song, but you can also scale it down to just your favorite part of the song so it wont take up nearly as much skin. It is advised you choose a more classical song that has already proven to withstand the test of time, such as The Beatles or Mozart, but if your heart is set on a "Jonas Brothers" tune, go for it.