If your minivan is fresh out of that "new car smell" (that's just leather, right?) people can't seem to get enough of, then cover it up with the "long-lasting fresh scent" of a frosted cupcake. A pack of three double-sided cupcake air fresheners from Medo's Auto Expressions costs $6 from Amazon, and even though shipping and handling is a comparatively outrageous $7, it's still way cheaper than a brand new car!
I can't tell from the product description, but I assume the air freshener is meant to hang from the rear-view mirror. And what completes the perfect picture of a suburban soccer mom than a swinging tri-colored frosted cupcake visible through the windshield?