Sample apps make great starting points. Try them out, view the code, fork a copy, customize to suit your needs.
Layer permissions on top of an Airtable applicant tracking base, allowing interviewers to see only specific information.
Automatically set your Slack status while your Google Calendar says you're away on vacation.
Pass inputs to a custom email template, preview before sending, and send.
Find objects in your S3 bucket, and delete objects deployed before a specified time.
Find container images and ECS tasks not being used, verify the creation dates, and safely purge them.
Create yearly recurring events on your Google calendar.
Duplicate (and obfuscate) events from your personal calendar to your work calendar, so your coworkers can see you'll be busy, but not any other details.