The Author Showcase plugin allows authors to display their books, with buy links, on their website in a nicely formatted style.

An implementation as a widget of the Goodreads "Grid Widget" (see "Edit Profile/Widgets"), which is fully customizable from the widgets menu.

Displays a wish list in the form of a grid of wanted items (for example CD, DVD or book covers).

Search for album covers, and use image as featured image, attachment or in post editor.