Take a closer look at your junk mail.

The reason companies send out mailings is because they are looking to grow their businesses.

I will call back the local company, like lawn maintenance, painters, plumbers, office furniture suppliers etc.

The conversation should go something like this:

"Hi, I just got your flyer in the post. I thought it looked very professional, you are obviously looking to grow your business. On Friday mornings, I meet with a group of business professionals who could refer business to you. Are you free on Friday morning at 7:00AM?"

This approach also works when companies cold call you by phone, I have invited people to my BNI Chapter when they have called me.