*** but I can't seem to find where I saved it...
Assuming you saved it on a Windows computer, you might try the freeware "Everything," available at Voidtools.com"
https://www.voidtools.com/downloads/
I have been using Everything for about two years, and it has saved me hours of (often fruitless) searching my computer for lost or misplaced files.
Once your computer is indexed, a typical file or folder search takes about 2 or 3 seconds. As an example, if you name a file or folder "Davidson Gitlitz Waypoints" and you search for "Waypoints," it will bring up every file or folder name that contains the word "waypoints."
What is "Everything"?
"Everything" is search engine that locates files and folders by filename instantly for Windows.
Unlike Windows search "Everything" initially displays every file and folder on your computer (hence the name "Everything").
You type in a search filter to limit what files and folders are displayed.
How long will it take to index my files?
"Everything" only indexes file and folder names and generally takes a few seconds to build its database.
A fresh install of Windows 10 (about 120,000 files) will take about 1 second to index.
1,000,000 files will take about 1 minute.
Does Everything search file contents?
Yes, "Everything" can search file content with the content: search function.
File content is not indexed, searching content is slow.
Good luck.