More gadgets like this: here
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.
These are pretty rate but you may be able to find them on eBay.
*Our articles may contain aff links. Please read our disclaimer on how we fund this site.
