The idea of a hidden spy cam is pretty scary, but let's be real, an undetectable decoy photo tool is a pretty awesome concept, too. The creativity and imagination that has to go into creating these things, along with the technological innovation, can excite anybody. Here are 13 of the best cameras you never noticed.

Hamas claimed in 2010 that it had been spied on by Israeli intelligence using this seemingly innocuous box of tissues. This is why you carry a handkerchief.

Photo by Khalil Hamra/AP

That businessman at the train station might be a KGB spy from the 1960s who time-traveled to spy on us all. Or he might just be tying his shoe.

Photo by Martin Meissner/AP

Can you trust that guy you hired to change out your smoke detectors? Maybe...but be a bit skeptical.

Photo by Steven Senne/AP

It's a mystery how pointing a gun at someone is supposed to be a subtle way to take a photo. But whoever had the idea to hide a camera in a fake gun, back in 1882, is awesome, regardless.

Photo by Jacqueline Arzt/AP

Now, if you saw someone pointing a car's keyless entry remote toward you, you wouldn't think twice. Therein lies the genius of this hidden cam.

Photo by Spyville

Before spy planes and drones, how did the CIA get secret aerial shots? Pigeons. It could be a better weapon—nobody looks up in the sky and wonders if a bird has a camera attached to its chest. Of course, a drone is a little easier to train to get the exact visuals you want.

Photo by CIA

The watch cam is the archetypal hidden camera. One used by German spies in the late 1940s and early 1950s, the Steineck ABC wrist watch cam was quite stylish. The lens is not discreet, and there aren't any, you know, hands, but other than that it blends right in.

Photo by International Spy Museum and Cristina Arias/Cover/Getty Images

Normal non-spies pull wallets all the time. So why would anyone suspect anything? If an East German STASI spy picks up the tab, look out—he might just catch you on his wallet cam.

Photo by Live Auctioneers

What is more unsuspicious than a rock? Seriously, who looks at a rock and thinks: This rock might contain technology to invade my privacy? Maybe you should. It's 2012, and you need to be scared of everything.

Photo by Spyville

Hiding a Cold War-era Soviet camera in a bra seems like the perfect spy solution, except that there's no place the average male is more likely to look. Whatever. Most guys probably still wouldn't even notice.

Photo by Seduced By Secrets

...On the other hand, stick the camera into the coat of some burly dude, and chances are most people won't look at his chest long enough to spot the lens.

Photo by International Spy Museum

Remember that broach pin grandma always wore when you were a kid? Maybe your grandma was a commie spy, firing off eight surveillance photos each time she clipped it to her blouse. Think about it.

Photo by Live Auctioneers

Spies can be fancy, too. Case in point: this ring cam, which balances the illusion of opulence and the power of reconnaissance. Just a giant gold ring, folks, nothing to see here. Click.

Photo by Live Auctioneers

Image research by Attila Nagy