1. Sandbox Cloning
The Clones are Coming! The Clones are Coming! Starting next week we should finally have the ability to clone Sandboxes. This means we can copy a sandbox to a new sandbox, including all data, metadata, settings, etc.
2. The Recycling Bin Component on App Exchange
One of the main reasons we all switch back to Classic Experience is the lack of the Recycling Bin. Easy to setup, easy to use, this is an easy usability improvement that takes just a few minutes to execute.
3. The Switch
Part of the SF Toolkit, the switch lets you turn off all Workflows, Triggers and Validation Rules which is golden when you are doing mass data updates. https://sfswitch.herokuapp.com/