Threaded timeline for posts is a cool new feature you get by using the brand new WordPress plugin called Threads. Using this feature you can publish different versions or updates of any blog posts by assigning a new timeline to it. For example you have blogged on WordPress installation and then after a few months you write a new post on WordPress Plugin Installation; now what you can do is create a new thread and assign these two posts with in that so that your users can see a timeline of posts based on same topic.
Flexi Quote Rotator is a popular WordPress plugin you can use for displaying quotes, testimonial and other rotating content snippets in different ways (widget, PHP Function or Shortcode) and using different styles in your WordPress based website.
The Alpine PhotoTile for Instagram is a free Instagram plugin for WordPress site owners. The pluginis is capable enough of retrieving photos from givn Instagram user and tag. You can link Photos to your Instagram page, any URL or to a Lightbox Slideshow. Using its shortcode generator you can easily insert Instagram widget inside you blog posts and pages. Full demonstration of this plugin is available at The Alpine Press.