Book Marketing Bleg

My book Pirates of Mars is coming out in November. I'm going to need some marketing material for said book, specifically book markers. Do any of the writers who read this know of a good source? I'm also considering making my own, but then I'd have to cut them. Any ideas?

In other news, I'm taking a vacation day tomorrow, and am probably going to hit the museums at Cantigny. Since the bank is closed Monday, there may not be a blog post. Enjoy your weekend!