A partial list of items banned from carry-on luggage by the Transportation Security Administration, as of June 2010:

• Ice picks
• Vehicle airbags
• Gel shoe inserts
• Meat cleavers
• Sabers
• Swords
• Cricket bats
• Spear guns
• Cattle prods
• Billy clubs
• Nunchakus
• Throwing stars
• Blasting caps
• Dynamite
• Hand grenades

And “snow globes… even with documentation.”

Via Futility Closet.