I had to do a lot of testing during my internship, so I came up with this script to autofill input fields in websites.
Of course I didn't want all of my tests to have the same data, so I made it programmable too so that I know that this particular dataset is for testing a particular module in the backend client.
The application I was testing had a frontend and backend client. Automating the whole application was just not feasible as I had to keep jumping between the browser and a desktop client.