I voted 'No' because I don't now, but I used to. Yep, right under the pillow. Later, it migrated to the nightstand drawer. Now it's in the closet, hidden, but easy for me to get my hands on it if need be.
I used to take it traveling, too, but now I take a baseball bat in my luggage and prop it right by the bed in the hotel room.
I don't like knives because I'm not trained in using them and I know they very easily can be turned around in a struggle. Plus, I don't want to get that close to an intruder!
-Dylan