One thing I did, very early on, was buy magnetic car door signs. Cost about $40 for two. I was surprised at home many new customers I got doing this. I'd park my car at the grocery store, and when I came back, would see someone reading my door sign. Of course, I smiled and started talking to them. I think I found, maybe, 12 new regular customers doing this.
Now: if you do this, be forewarned: If you live in a warm climate, like I do (Florida), you MUST remove the signs maybe every other day. IF you dont, they will be baked - literally- baked onto your car's doors. I dont know how they perform in colder climates, but this is what I found here. I had to buy rubbing compound to get the baked on sign stuff off!!!!
On flyers. I cannot tell you many times people have left flyers at my door or on my windnshield. My AUTOMATIC response is to tear them up. I doubt I am all that different from other folks., and seeing those darn fliers just annoys me. Flyers, to me, say in loud words: "I am such a crappy company I have to pay someone to stick flyers under windshield wipers"!!!! To me, all it does is turn me totally off, and I do not bother to even READ the flyer. Maybe where you live, it's different. Who knows.