This is a Firefox extension that makes it easy to download all attachments on a course page in one click.
Disclaimer: I no longer have access to the Toledo platform so I can no longer maintain this add-on. As far as I know it still works though. If you'd like to take over the project, feel free to fork the repo on GitLab.
Usage:
When you are on a "Course Documents" page, click on the extension icon. The extension will download all attachments, zip them and show a download dialog for the zip file. Please wait for the dialog to appear before closing the extension popup window, as this will stop the download.
