How to post a sign on driveway?

[Peter Sik]

My property is at the back, nobody can see if I post a 'for rent" sign on the front yard. I want to post the sign on the concrete drive way, my idea is to put a pot with soil on drive way then stick the sing on it. I want to see if anybody have another method to post a sign on drive way that is easier to move around, more light weight and secure on the drive way? Because my PM is saying using pot + soil is very heavy and needs contractor to get it done.