I've had a friend do the reverse: parking in illegal spot, and borrowing a ticket from another car that already received one. Upon return some hours later, he returned the ticket to the correct windshield.
Quite brazen, and frankly a bit of an asshole thing to do.
I’ve seen a parked car with 3+ tickets on the windshied (didn’t count but there was a small stack of them) in Austria. Had a foreign license plate though so probably just didn’t care and wasn’t gonna pay.
Around my area they almost always open existing tickets to check for the time/date. In addition many parking enforcement people patrol the same area all day and remember whether or not they already ticketed that vehicle.
Creative... I've not done it, but it seems if I get a really good scan of a ticket, put my info on it, and use it as needed, they don't have a record of it. So I'd never get a fine.
Quite brazen, and frankly a bit of an asshole thing to do.