Floppy disks may be a thing of the past but people are still interested in buying products inspired by them. Take this Floppy Disk Calculator for instance: powered by light, it can solve your number problems. You can gain access to the display by moving the shutter.
Gaming content, Boosts, & Video subscriptions: TwitchPrime for Gamers, Amazon Video
These are pretty rate but you may be able to find them on eBay.
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