Genuine walnut stain used by artists and calligraphers is made from steeped walnut hulls. You can make your own by crushing green walnut husks (not the shells). Add boiling water and let steep. Store in an airtight jar, away from light.
In 1996, there were 5 billion floppy disks in use. How many is that? Instructables user Jetpack5 says, “If you stack them one on top of each other it will reach from here to someone that is tired of stacking up floppy disks.” That’s a lot. He’s putting his to good use. With a few rubber bands to help, Jetpack5 can recreate scenes from Star Wars. You can, too, by following his instructions at the link.