Re: How do they do that?
It's because they don't exist.
From a production engineer's point of view a screwdriver, especially a flat blade one, must be a boring old thing to make. So they don't bother. They hire squadrons of mystical oriental gurus and swami types to 'put the fluence on' a lot of scrap material. They hypnotise old rags, torn trousers etc. into thinking they are screwdrivers.
(1) all modern screwdrivers bend rather than getting the lid off the paint pot.
(2) when the magic wears off they revert. So you leave a screwdriver on the bench and when you come back you can't find it, but there is a stained scrap of polka-dot fabric that bears no resemblence to any clothing you have ever written off.