19. An odor neutralizer to hang in your car to keep it from smelling like… ass (to be frank).

Promising review: “I drive a ‘05 Suburban that has had years of hauling just about everything you can imagine, resulting in an unknown number of spilled sodas, misplaced fast food, and who knows what all else. Recently, someone put an ice chest in back without bothering to cap the drain, so you can imagine the musty cruddy smell that existed shortly thereafter. Cruising through the Amazon website, I discovered the PURGGO, and based on the reviews, decided to give it a go—and am I ever glad that I did! After ‘charging’ it for an hour in the sun, I hung it exactly as illustrated, and actually forgot it was there until a few days later when my wife (who could smell a fly fart in a neighbor’s garage) asked me what I’d used to get rid of the terrible odor.” —James L. Kramer

Price: $19.99