Air fresheners in movies

I was waiting at a bus stop recently when I noticed a car with a Christmas Tree air freshener hanging from the rear-view mirror, which put me in mind of Repo Man (1984) and the whole business of the Little Trees homage shots that subsequently made their way into movies and TV.

Repo Man features pine tree-shaped air fresheners in almost every vehicle in the movie, including the police motorcycle. People will tell you that the manufacturer, Little Trees, funded the movie, but that's not true. No money changed hands, but a number of air fresheners did. It is part of the legend that every Little Tree used in the movie was scent-free, because no one could handle the smell of them.

Repo Man is a cult movie, little known in the mainstream, but beloved by aficionados, who include many young Hollywood directors. I don't know exactly when the trend started, but it became a thing to include a Christmas Tree air freshener somewhere in your movie. Here are some examples.

Repo Man (1984). The first car recovered by Emilio Estevez has a blue one.

In Repo Man (1984), even the police motorcycle has one.

Cadillac Man (1990). Robin William's wife has a red one.

Robin Williams wears a green one in The Fisher King (1991).

Charles Durning has two in his car in Home for the Holidays (1995).

Full screen in Ocean's Eleven (2001). Is this big enough?

In The Wire (2002), Season 1, Episode 2, Rawls tosses the wrong office. Landsman points out that this is McNulty's office. Notice the green leaf, bottom right.

As befits a Shopgirl (2005), Claire Danes has a pink one.

In 10 Items or Less (2006), Morgan Freeman checks all the options...

... before choosing a green Christmas Tree for Paz Vega's car.

In The Unit (2007), the CIA use a green one as a signalling device.

Ellen Page has the red Autumn Leaf version in Juno (2007).

Amy Poehler has a red Christmas Tree in Baby Mama (2008).

And in Despicable Me (2010), Gru opts for a generic green one.