A classic Tip of the Week from June 13, 2004
If you want to keep your Swiss army knife, nail scissors, or lacrosse sticks while traveling by air, don't pack them in your carry-on luggage. In a season of extra vigilance by the security personnel in airports around the country, you can expect any verboten object to be removed from your carry-on bags and confiscated. (Some airports will allow you to mail the item back to yourself--at your expense--but not all offer this service.)
For the most up-to-date list of what you can and cannot carry in your luggage, refer to the TSA's list of Permitted and Prohibited Items. Because while well-organized luggage can help make travel more enjoyable, only well-planned packing can help keep your trips and your possessions safe.