This includes the magnets in your stereo speakers. Keep floppies away from sand and dirt, food and soda. I had two students last semester complain that their disks would no longer work. Keep floppies in protective boxes. When your disk is curved to fit your back pocket, data recovery is slim.
Disks are cheap.
Use a new one for important data backups. Save to your hard drive if working at home. Then use the file manager to drag a copy of the file onto a floppy. Make and additional copy on another floppy for a backup if you are on deadline and can't afford anything to go wrong.