I shared before how I file my warranties in my filing cabinet. I read of one lady who kept her warranties in three-hole punched Ziplock bags. She had one category for each bag. She kept them in a large notebook.

I tried that, but I had way too many warranties because I keep them all. I also keep copies of the receipt, stapled to the warranty, and the original box.

The last time I cleaned out my filing cabinet, I decided to just keep the English warranty. I cut off the warranties in other languages. That cut down the bulkiness of the files.