Happy Addons is a new Elementor plugin that has a free and a premium version. The free version has more than 40 widgets and several animation effects. There are some widgets that are not widely available, such as a Gradient Heading, Skill Bar, Review,and Step Flow widgets. There are also a couple of nice animations: various CSS Transforms and especially the Floating Effect.
The Premium version brings the number of widgets up over 100. It also uniquely extends Elementor itself with 20 extensions that add features such as presets, cross-domain copy and paste, and unlimited section nesting.
Packages are available in 1, 5, and 1,000 sites. There are annual and lifetime options.