Other solutions:

Site Duplicator

Special Leave Request Automator (new version with web app approval)

Leave Request Automator (old version using manual spreadsheet approval)

Club sign-up and register creator 

Calendar to Doc

Virtual Parents' Evening Assistant

Group Membership Automator

Microsoft Office to Google Docs Converter

For Super Admins:

Google User Creator

Google Classroom Manager

More solutions coming soon... 🤞