Mushmouth26 writes – “This is a huge disk I found at work.. Not sure what it was used for.. Probably for recording video, but it is laser disc technology probably used in the late 80’s.. The disk in the middle is the old school 8 inch floppy used back in the 60’s. I am missing the 5.25 inch floppy. The disk on the right is your standard 3.5 inch.” – Link.