Old bicycle tubes: I'm a cyclist and have loads of old tubes around. I cut them up, they make really good elastic bands, especially for outside since they don't deteriorate in the same way as normal rubber bands. I also use them for wide flat tyres for wooden toys and I have been known to patch them and use them on my bike! They can be used like bungee cords for various things.
Old mechanical hard drives:- I am not suggesting people should do this, but it's what I do with old drives. Rather than smashing them up, I take them to bits, There are two very good rare earth magnets. You can never have enough magnets!. There is a small very high quality bearing for general use. I remove the platters and use for wind-chimes. Not only do they make a lovely sound, but they reflect sunlight as they turn. It's not feasible for anyone to take these platters and retrieve data once stripped from the drive, but the surface can be scored, or the platter destroyed to make absolutely sure data can't be retrieved.
Some platters are glass, but extremely tough, but if you try, they will break and produce sharp edges, but nowhere near as bad as some glass plates you might have in your kitchen. Other platters are aluminium. There are some extremely small machine screws, which can be handy. One of the screws came out of my bike gear shifter. The gears wouldn't work, but one of the screws from the hard disk was an exact match for the missing screw. What are the chances of that!
Old mechanical hard drives:- I am not suggesting people should do this, but it's what I do with old drives. Rather than smashing them up, I take them to bits, There are two very good rare earth magnets. You can never have enough magnets!. There is a small very high quality bearing for general use. I remove the platters and use for wind-chimes. Not only do they make a lovely sound, but they reflect sunlight as they turn. It's not feasible for anyone to take these platters and retrieve data once stripped from the drive, but the surface can be scored, or the platter destroyed to make absolutely sure data can't be retrieved.
Some platters are glass, but extremely tough, but if you try, they will break and produce sharp edges, but nowhere near as bad as some glass plates you might have in your kitchen. Other platters are aluminium. There are some extremely small machine screws, which can be handy. One of the screws came out of my bike gear shifter. The gears wouldn't work, but one of the screws from the hard disk was an exact match for the missing screw. What are the chances of that!