Freebie Images is a simple plugin which lets insert free stock images from Creostock into your site.
Once installed, the plugin adds an image box above your publish area on your post page. You simply need to search for a related image and then insert it into your article.
If you insert stock images into your articles a lot then you will find Freebie Images very useful, particularly when you consider you have thousands of images to choose from.
Link: Freebie Images