What kind of promo lures you into buying?

Okay, now that I have your attention.

Seriously: is there a single promo item that will convince you to pick up a book?

I'm gearing up for promo for my two books coming out next year. I'll discuss my promo philosophy on Wednesday, when it's my Day to Blog.

What about you? We've all seen bookmarks, pens, letter openers, calculators, and Lord knows what else with names of authors and/or books on them. Then in the stores we've seen the big stand-up thingies screaming a book title, or clumps of books sitting out on tables and/or displays, as well as advertisements for book signings.

What sells a book for you -- what makes you walk through the bookstore, browse, then pluck that one book off the shelf and take it up to the cash register?

J