Security systems.  If I put a sign in my yard I would get a free security system.

The woman was calling from a woman's cancer center looking for donations.  I told her that I was not interested in donating unless I knew who the agency was and she started in with the spiel about how I should be donating to help women in their time of need.  I asked her if she could send me some documentation about her agency and she said she didn't have the authority to do that so I said that I was sorry and could not donate and she just hung up.