The Airbag Ad Hit the front end of the Peugot on the opening page, and an actual airbag inflates on the spread inside. Ad agency Loducca made 50,000 of these things for a Brazilian magazine.

The Talking Ad QR codes got dictators talking in a recent print ads from the free-press advocacy group Reporters Without Borders. You scan the QR code with your iPhone, then place the phone over the leader's mouth. The mouth starts talking—but it's the voice of a journalist discussing media censorship in that country.

The Solar-Powered Ad This print ad promoted green energy by being solar-powered itself. In the magazine, it's just a black-and-white sketch. But held up to sunlight, it blossoms into full color.

The Bottle-Opener Ad Follow the instructions on this ad, and you can use the flimsy piece of paper to open a bottle of Carlsberg. Useful!

The Edible Ad Volkswagen cooked up a lovely little ad you can eat, and placed it in Auto Trader magazine. The ingredients are listed on the side as "glutinous rice flour, water, salt, propylene glycol, FD&C colour, glycerine." OK, kind of gross.

The Bra-Tightening Ad This Wonderbra ad lets you do a little imprompu boob cinching—a nice little pick-me-up when you're in the middle of a boring article.

The Bubble-Gum Ad Simple and fun.

The Test-Drive Ad This Norwegian ad for Volkswagen showed a long stretch of road (in summer and winter versions) and told readers to download an app that lets you "drive" a car on the road by hovering your iPhone over it. You could test three different features of the vehicle—lane assist, adaptive lights and cruise control.

The Sunbather's Ad Just what you need—a suntan-lotion ad that comes with a handy way to completely cook your face off.