Giant Penny; Heavy Coinage.
Some people think so big, a regular penny for their thoughts just won't do. This jumbo 3" metal penny should do the trick; it's heavy enough. (Over two ounces) Throw it in the wishing pond for a splash and a big wish granted. Look at the photo, a regular penny is shown alongside for comparison. Same coin sold by competitors for up to $9.95, or at least offered for that much.