Crazy things taken from fliers

TSA stopped 1,813 guns (80% of them loaded) from passing through U.S. airports in 2013, averaging about five catches per day.

Just some of the cane swords discovered in 2013. TSA screened more than 600 million passengers last year.

A mace was one of the more menacing items confiscated. Would love to have heard the explanation for this one.

"A non-metallic dagger was discovered on a passenger at Salt Lake City after he alarmed Advanced Imaging Technology. During the pat-down, the dagger was found hanging by fishing line around his neck and under his shirt," said Bob Burns, the TSA blogger.

Some of the items used ingenious ways to try to circumvent the officials. A cigarette pack stun gun, a dagger concealed within a brush, a credit card knife, a lipstick knife, a stun gun cell phone, a lipstick stun gun and a razor concealed in a cell phone were all confiscated in 2013.

Many ninja wannabes were disappointed across the U.S. last year.

An inert suicide vest was also found. Inert and replica weapons are just as likely to be confiscated as real ones, the TSA says.

No matter how gentle it looks, a pepper spray is a pepper spray. Especially when it's clearly labeled so.

The owners of these clay pots claimed not to know human skull pieces were inside.

• More than 1,800 guns discovered on fliers last year, according to new TSA report


• Other smuggled items included knives, ninja stars and human skull fragments


• Innovative weapons included credit card knives and lipstick pepper spray

(CNN) -- Guns, grenades, human skull fragments and a pepper spray disguised as a lipstick -- just a few of the things confiscated by Transportation Security Administration (TSA) officers from travelers in U.S. airports last year.

In TSA's recent blog post: TSA Blog Year in Review: 2013, TSA blogger Bob Burns reviewed some of the dangerous or unusual items officers confiscated in 2013 as well as some of the creative ways passengers tried to hide them.

A total of 1,813 firearms were discovered, 1,477 (80%) of which were loaded.

Atlanta International Airport, the world's busiest, topped the chart for gun catches with 111 guns discovered over the year.

Dallas/Fort Worth International Airport followed, with 96 guns discovered, while George Bush Intercontinental Airport in Houston (68 guns), Pheonix Sky Harbor International Airport (66 guns) and Denver International Airport (51 guns) rounded out the top five.

The key message the blog wants to impart is: passengers can't fool TSA officers.

Deterrent vs detergent

"In what was believed to be an attempt to avoid declaring his firearms, a passenger at Houston (IAH) wrapped two guns in newspaper and placed them in a box of detergent powder in his checked baggage," wrote TSA blogger Bob Burns.

MORE: 15 bizarre items left behind by travelers

A non-metallic knife was just one item that tried to bypass the security checks, but failed.

Another passenger was found at Salt Lake City with a non-metallic dagger strung around his neck with fishing wire.

A stun gun concealed in a cane and a pepper spray disguised as a lipstick both failed to escape detection by the TSA.

The TSA also busted people hiding various kinds of knives.

"Our officers regularly find sword canes, credit card knives, belt buckle knives, comb/brush knives, knives hidden in shoes, knives hidden in thermoses and knives hidden under the bag lining near the handle mechanism," wrote Burns.

Other knife finds included one hidden in an ink pen and a multi-tool inside a computer hard drive.

Ninja stars too

The TSA also found 562 stun guns, a wood and metal mace, throwing stars and grenades -- both real and replicas.

Another takeaway: inert weapons are as confiscable as real ones.

That should serve as a lesson for the self-claimed military instructor who carried six inert pressure plates, 20 inert initiators, an inert land mine, inert explosives and two initiation systems in his bag and got detained at Norfolk, Virginia.

The only non-weapon mentioned in the review was that of some human skull fragments in clay pots found at Fort Lauderdale in Florida.

The passengers claimed they bought the pots without knowing there were skull fragments inside, according to the blog.

The TSA Blog was launched in 2008 covering various stories, from Valentine's Day travel tips to the truth behind the behavior detection officer, the officers who glare at travelers as they pass through a TSA checkpoint.

MORE: Keep your shoes, jackets on: TSA to expand pre-screening program