You can think that this question is stupid. Actually, I do. Everyone will say they are organized. Who will admit otherwise? You should know that everyone will say similar things. Take this time to be creative with your answer. You can use these types of questions to leave a strong impression with a creative answer. Or, if you are not creative, then the best way to answer this question is with an example. Using a story is more believable and easier to remember. Feel free to mix in a little humor to make it more memorable.
This example should only be done if you are confident with your communication abilities. If you appear awkward or if you sound like you are reading this type of answer, it could have a negative effect. Instead, you should make a generic answer if you are uncomfortable with this type of answer.