I don't know how unconventional my plans are but so far a few are working.
I create biz cards with the cover of my next book on it, the back includes previously published books and how to find them along with my website information, and phone number (I'm single haha).
I never fail to bring up I'm a writer in conversation, in church, in a bar, at the beach and I always have cards with me. I try to be humble about it, such as if someone asks what I did for Christmas I look sheepish and say "I was just try to nail down that last chapter in my new book."
Likewise I never book air direct flights. I love lay-overs and I have passed out a lot of cards that way too. I usually plan on at least an hour or more lay-overs, write my bar bills off to marketing.
My next project is putting my book covers on magnetic car signs. It worked for my wedding business. (I am considering tour trollies)
I have scoured the internet for indie reviewers and submitting for additional reviews, cover posts and blog spots.
I'm also going to work with a friend and produce a writer's conference. Most editors and agents don't mind giving up some time to speak at conferences. I live in Naples Florida, so we have a wealth of locals to work with. (I've produced 5 conferences )
In addition I'm doing the traditional thing and shopping print publishers - looking for an agent. My current for-sale work has several 5 star reviews and one 4 of 4 star review.
I am thinking of sending it to some celebs. (Which I am doing for a friend as well, although his book is a different sort of novel and will benifit from a Charlie Rose review.)
I'm too late with one current for- sale work for a libarary magizine review so I'll do it with the one I am finishing. And I am going to get a few print copies and send to the NY Times.
I hope there will be many more ideas posted here.