Helpful scripts I used the past
Copy all users from AD group a to AD group B.
Copies all groups from a specific OU to Entra, including members and description.
Adds Entra ID groups with a specific phrase to a defined Entra Application.
Deletes all empty folders in the given path and in all sub folders.
Some Robocopy commands
Set a storage limit of 25GB for all sites which currently have a limit more than 1TB. It will also set the warning to 20GB
Find a Mail address in Exchange Online (including additional proxy addresses)