I have noticed that on specially marked boxes of Kelloggs Corn pops, they are giving the buyer the chance to look inside the box to see if it says they won a Sony MZ-S1 minidisc player or not.
Another bonus is that on the side of the box, there is a $1 coupon off any purchase of Sony minidisc media. Not bad at all, with promotion like this it doesnt hurt our case that the minidisc should stick around and flourish in North America.
This promotion seems to be found in the midwest US. I dont know where else Kelloggs is promoting this.