21 of the strangest weapons people have tried to take through airport security

Most travelers have a number of things to worry about during the holiday season.

For TSA agents at the country's airports, there's also a variety of things to worry about - knives, fake grenades, swords hidden in canes, knives hidden in guns, throwing stars, and all sorts of other contraband.

The TSA has taken to documenting some of the weapons and other prohibited items it encounters at security checkpoints, posting them on the agency's Instagram account, which has accumulated more than 500,000 followers and rave reviews.

"I knew it would be popular and I knew we'd have a never-ending source of content," Bob Burns, who runs the Instagram account, told The Washington Post. "But I didn't know how popular we'd be."

Below, you can see a selection of strange weaponry or look-alike weaponry that the TSA has come across and put on its Instagram, which Rolling Stone recently ranked as the fourth-best account on the social-media site.