Simple, but very useful and powerful plaugin, which adds to your WordPress-powered website a special widget which can show unlimited banners in any siderbar of you theme.
All you need to do is to place it in the right place, add title, URL of the banner’s image and your affiliate link.
Features:
<ul>
<li>Unlimited banners to any sidebar of your website;</li>
<li>Show up any .jpg, animated .gif or transparent .png image;</li>
<li>Customize the width of every banner with ‘width’ parameter. No need to fill in the height.</li>
</ul>
Ownyourblog Banner Widget is bulletproof solution tested on many blogs.

Ownyourblog Banner Widget

Simple, but powerful widget to show any banner you want in your sidebar. One-click solution!

Sergey Panasenko

NEW! Introduced WordPress 5.0 Gutenberg Editor block! 
NEW! WordPress image size chooser.
Sponsors Carousel implements the jCarousel as a WordPress plugin.
You can set internal link for all image or custom link for any image.
Upload images use WordPress Media.
Drag’n’drop for change image order
Multiple carousels on one page.
The plugin uses the shortcode [sponsors_carousel], [sponsors_carousel id=1] …
The plugin uses jQuery, and if your site doesn’t already use jQuery, it’ll add the script for you.
It was inspired by jCarousel by Jan Sorgalla.

Sponsors Carousel

This plugin displays thumbnail images or banners in a carousel using jQuery jCarousel.

Ownyourblog Banner Widget vs Sponsors Carousel