If a gold ring is too small for your finger, you can place it onto this, and use a hammer to drive the wedge into the middle, and expand the ring (without going to a professional jeweler).
Usually it’s only good for a 1 size adjustment, and it doesn’t work with some rings, especially if they aren’t an even width all the way around.




Winning the lottery is (ballpark) 1 in 10^9, so generating a key below a million is like winning 11 lotteries in a row, while buying 1 ticket in each.
They wouldn’t know how you’d done it, but I think you’d be arrested, with valid probable cause.