I will be flying for first time since the new carry-on luggage rules apply. I travel with a backpack and stay at hostels. Also want to bring everything as carry-on. Can anyone tell me what kind of backpack items are not allowed as carry-on now?
thanks

The best advice anyone can give you: Contact the airline and ask them!

Here's the official list as of last month, but I would still contact the airline or airport in case their rules are stricter. Please note that disposable safety razors are permitted. But leave the cattle prod at home!

ITEMS PROHIBITED IN AIRCRAFT CABINS

The following items will not be allowed through the security checkpoint. Please note that this list is not all-inclusive. In addition to items specifically listed here, other items that may be deemed to present a potential threat may also be prohibited.



Ammunition
Automatic weapons
Axes
Baseball bats
BB guns
Billy clubs
Blackjacks
Blasting caps
Bows and arrows
Box cutters
Brass knuckles
Bull whips
Cattle prods
Compressed air guns
Corkscrews
Cricket bats
Crow bars
Disabling chemicals or gases
Dynamite
Fire extinguishers
Flare pistols
Golf clubs
Gun lighters
  Gunpowder
Hammers
Hand grenades
Hatchets
Hockey sticks
Hunting knives
Ice axe/Ice pick
Knives (any length)
Kubatons
Large, heavy tools (such as wrenches, pliers, etc.)
Mace
Martial arts devices
Meat cleavers
Metal scissors with pointed tips
Numchucks (nunchaku)
Pellet guns
Pen knives
Pepper spray
Pistols
Plastic explosives
Pool cues
Portable power drills
  Portable power saws
Razor blades (not in a cartridge)
Religious knives
Replica weapons
Revolvers
Rifles
Road flares
SCUBA knives
Sabers
Screwdrivers
Shot guns
Ski poles
Spear guns
Starter pistols
Straight razors
Stun guns/shocking devices
Swords
Tear gas
Throwing stars
Toy transformer robots (this toy forms a toy gun)
Toy weapons

Passengers should be aware that there are no provisions for returning banned items to them when they are left at the security checkpoint. In addition, those who attempt to bring banned items through the checkpoints are subject to civil penalties of up to $1,100 per violation in addition to criminal penalties.

The items most commonly left at the checkpoints include: scissors (of all types), pocketknives, corkscrews, and mace. Please be sure to leave these items at home or in your check-in luggage.


http://www.tsa.dot.gov/workingwithtsa/travel.shtm

Phooey. I wanted to bring my meat cleaver on the plane. Now I have to check it.

One item missing from "the list"....SAFETY PINS.

I had mine ridiculously confiscated at SJU the other day. I was surprised since I have traveled thru there with safety pins in my carry on numerous times since 9/11. Just goes to show that it all depends not only on the airport, but the personnel working, as well.

ANYTHING pointy or cutty. And they will undoubtedly go through your backpack at security and again before you board the plane so be prepared with plenty of time. You might also think about packing in see-through plastic bags in order to facilitate it being put back in with some ease and semblance of order. I have watched MANY roll-aboards being searched in the last 8 months.