What are some original or inexpensive ways I can promote my poetry book for sale?

You can create and put some artistic posters (handmade or digital,color full, printed in pc) about your book in the frontdoor of bookshops (if they let you or know you) in smart cafe with thoughtful people,in the central streets,in the walls,to your friends ,online i guess you are a member in many sites about poetry,in your webpage.hope your new book goes well and hope i can buy one not on line .