Propped up 6 x 9 Paperback Book Mockup.
Stacked 6 x 9 Hardcover Book Mockup with iphone 6. The phone can be easily be turned off.
Hardcover book mockup protected with a dust jacket.
Another book Series Mockup with Ereader (iphone 6) presented on an oak table.
Here's a complete book promo mockup you can use. Each book is compiled into it's own Photoshop group so you can easily add and remove objects.
Another 5 x 8 book mockup, but this time with a mobile phone. Letting your prospects know your book is also available via ebook and kindle.
Try this mockup with (or without) a coffee cup. Fits the common 6 x 9 size. Placed on a modern wood table inside a studio.
Here's a messy trilogy stacked over a white background. There's no spine required so you can quickly start adding your covers to this template.
One of my guilty pleasures is definitely coffee. I just happen to be having a cup while making this template. 6 x 9 hardcover book Promo on Coffee table. Includes a grungy style texture for your cover, but you can turn it off as well. Any backdrop will do.
Spooky and dark mockup. The lighting was designed to fit the scene but you can edit the backdrop or simply turn them off.