We remember the format wars in the vein of “Two men enter; one man leaves.” Think VHS vs. Betamax, or HD-DVD vs. Blu-ray. But in the cracks in between, some media formats came and went with hardly any notice, or have been largely forgotten in favor of other media platforms. Remember the 8-inch floppy disk, or Sony’s short-lived 2-incher? More at PM.
Lots of memories in this list.