Not a (big) project but as a student I worked in third level support and we had to make sure that the service number was always available. The contract had hars

Not a (big) project but as a student I worked in third level support and we had to make sure that the service number was always available. The contract had harsh penalties in case we missed a call and so we had to reroute the number even for short breaks. This was done via a terrible, clunky and ancient Cisco web interface several levels deep. It took like a minute or more to log in, navigate to the right place and copy and paste the right number. I think the 30 minutes I spent to automate this was the best return on investment I ever reached, because the script was used for years by many people and did not only help to prevent us from penalties but must have saved a considerable amount of time over the years.