05 honda civic ex special edition, hiding places?

I recently bought a 05 honda civic ex special edition. I was told by a friend to buy wheel lock lug nuts. To prevent anything from happening, since its common car on the road. He advised me to find a good hiding spot in the car to place the key for the lug nuts. Does any one know of any place in the car i can put the key? I tried looking around my self but could not come up with anything.

If these are the stock wheels there's really little need to lock them as the auto recyclers can sell you a replacement cheaply. Once again due to it's being a common car. Otherwise just keep the key in with the spare. Someone looking to swipe your wheels isn't interested in taking the time to also break into your car. If they are interested in breaking into your car they will most likely take the whole thing in which case a hiding place is moot.