Zip drives were a must have for graphic design students in its heyday. They were relatively affordable (around $150 USD for the drive, $10 per disk iirc) and had a capacity of 100 Megabytes per disk, which was sorta shitty for removable storage even then but good enough for design project assets. There was little else commercially available at the time that was affordable and allowed you to easily port files between home/work/school, so they were everywhere in certain circles in the late 90s, particularly in design.
They were flimsy and unfortunately kinda unreliable, though, so if you heard the dreaded "click of death," it meant your disk was hosed. They eventually started selling 250 MB drives, and I remember there was the "Jaz" drive whose disks could hold 1 GB, but by then I think people were just done with Iomega's shit. I didn't know anyone that owned a frickin Jaz drive. When USB thumb drives became a thing around the turn of the millennium, Zip drives pretty much disappeared overnight. Good fuckin riddance, they sucked.