wondermill

<p>If you want to graphically display a random list of your posts with their featured image in the side bar, then this is the plugin for you. This plugin allows you to set the category IDs (or all categories) you want to pull the random posts from, the number of random posts to display, the maximum width and height of the featured image thumbnail, the widget title, and the colors of the surrounding box.</p>


Random Posts with Thumbnails

Puts a list of clickable random posts with their featured image in your sidebar as a widget, this list is customizable.

hotthemes

Hot Themes

<p>Hot Random Image by <a href="https://www.hotjoomlatemplates.com/" title="Hot Themes" rel="nofollow ugc">Hot Themes</a> is a basic plugin that shows a randomly picked image from a selected folder where images are stored. You can define a folder and the plugin will show all the images from this folder in a random order. Also, it’s possible to select only certain images from the folder that will be added in rotation. Each image can be linked. Alt text is optional. Image dimensions (width and height) can be defined in any format (pixels, percents, auto-mode…). Therefore, this plugin is appropriate for all responsive websites.</p>


Hot Random Image


If you need to insert a random image, it’s a very interesting little plugin. The features are quite handy too. And it works without problem.


Does the job and interesting features

Hot Random Image is a basic widget that shows a randomly picked image from a selected folder where images are stored.

Random Posts with Thumbnails vs Hot Random Image