The Idea: A tenant's-rights lawyer was daily running a search for Tenant/Landlord cases and was copy/pasting the case information into a spreadsheet which was subsequently used to mail merge advertisement letters to the defendants. My client needed a more efficient way to collect this information.
The deliverable was a single bookmarklet which is added to the client's browser. Clicking the tool on the search form auto-fills the fields with both static search criteria, as well as calculated dates for "yesterday" (since Monday's yesterday is Friday, this was less-than-trivial) and submits the form. The next page is the search results; on this page, clicking the tool loads the scraping library into the page and a second click launches the data collection.
When the script finishes running, the collected data is downloaded as a CSV through the browser's native functionality. The mail merge process then continues as before, except that my client has saved an hour or more in the collection process!