Business cards and car magnets are not very expensive - use them to let everyone know that you are in this business.

I now only do bandit sings and I am getting solid leads calling me every week. 100 bandit signs a week guarantee you will have leads calling you. btw after 6 month of having a car magnet I did not get a single lead. 

Lockheed Martin, Alliance Airport, BNSF) are consistent magnets.

Also, if anyone knows of a place for those little magnetic car signs.

The car has magnetic signs tree service , landscaping , power washing .

And they leak.Don't know what bead blasting is, but a white screen sounds kind of weird and like a dirt magnet to me lol.  

Make sure your tenants understand their rights and obligations as stipulated on the contract.Each of my rental units has fridge magnets with the contact information of my plumber, pest control guy, and electrician on it for the tenants to contact directly.

My Business CardA design for a car magnet or a bandit sign.

After drinking a lot of wine one night with a roommate, we began discussing the colors things turn in the fridge after they go bad, and thought a fridge magnet would be a great seller. 

They're just dirt magnets and one more thing to fix.