For pennies, you put into the machine 2 quarters, and 1 penny.
The machined flattens the penny into a kind of oblong oval shape, and presses an image onto it.
It comes out looking like an oval penny-coloured medalian with the image. All traces of the original penny image
are gone. Took alot of work to convince my 4 year old that the result was made from his penny - he thought it was not a penny at all.
The allure arrises from the fact that 1)the machines are not too obvious, you have to kind of be looking for them to notice them - kids love looking for these machines 2)each machine offers a specific image, and for the most part, you won't find that image available at any other machine - so when you find one, its kind of a now or never thing 3)most machines offer two or three different images - so the kids have to choose what they really want - unless you don't mind spending $1.53 per kid per machine 4)the penny books let the kids really see how their collection is growing - tracking the progress of this seems to facinate them. 6)Most machines show some of their intrenal mechanisms so you can see the gears and chains work as the penny is pressed - big interest factor for kids 6)The things are ALSO available at Sea World, Busch Gardens, Niagra Falls - not limited to Disney.
Now that we're really "aware" of these pennies, we will be looking out for them at all tourist attractions all summer. I've definitely seen them around before, but never noticed them until my 7 year old brought them very clearly to my attention.