Arena is a macOS command line utility to create Swift Playgrounds with embedded Swift Package Manager (SPM) packages. It allows you try out Swift packages with ease, in a single command:

$ arena alamofire/alamofire
➡️ Package: https://github.com/alamofire/alamofire @ from(5.3.0)
🔧 Resolving package dependencies ...
📔 Libraries found: Alamofire
✅ Created project in folder 'Arena-Playground'

Version 1.0 brings with it a few significant changes:

a simpler project format
it facilitates adding additional dependencies
it is Xcode 12 only

Playgrounds work much more reliably in Xcode 12, making it very easy to try out Swift packages in a playground. And the new project format opens up the ability to add more dependencies after initial playground creation.

The following video demonstrates how to do this:

You can find out more about Arena and how to install it over on its Github page.