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!

SP - Booking.com

It’s never been easier to create a personalised banner that matches the design of your site and engages your audience.
The Banner Creator is easily customisable to your needs, your audience and the devices they use. You can create a banner from any image* you want, or choose from six beautiful photos inspired by the most popular themes on Booking.com. Then just enter a clear call-to-action and you’re ready to go!
Once you’re done creating it, you’ll need to track the reservations it brings in. The Banner Creator makes tracking simple. Once you attach a label to the banner, the Partner Center Individual Bookings Performance report will clearly show you which reservations have come through the banner.
Minimum 1920px to ensure the best image quality
To activate tracking, you will need to enable the ‘Label’ column in the report
<h4>Features</h4>
<ul>
<li>Responsive – banner adapts to any device and screen</li>
<li>Easy to use – no programming knowledge required</li>
<li>Customisable – a wide range of possibilities, including the choice of any photo</li>
<li>Professional look – eight ready-to-use themes</li>
<li>Label tracking, Partner Center banners are not tracked in the Performance reports</li>
<li>Unlimited banners – create as many as you need</li>
<li>Use shortcodes to show the banners inside posts/pages or as a widget in the Widget area </li>
</ul>
<h4>Possible customisation</h4>
<ul>
<li>eight ready-to-use themes</li>
<li>use custom images from your gallery</li>
<li>call-to-action button yes/no</li>
<li>call-to-action button copy</li>
<li>banner copy</li>
<li>banner link</li>
<li>add your CSS class</li>
<li>customisable tracking labels</li>
</ul>

Booking.com Banner Creator

With the Booking.com Banner Creator plug-in, you can make attractive, profitable banners for your website and start earning commission.

Ownyourblog Banner Widget vs Booking.com Banner Creator