A non-insignificant part of my job involves saving Gmail messages and their associated attachments to specific folders in Google Drive. I wrote a Google Apps plug-in that makes this a single-click activity. It used to take ~20-30 seconds per email to properly save the email as a PDF as well as the attachments. All resulting files have to follow a specific naming convention. I use this tool several times a day and it really brings me joy each time I click the button and save some time.