And this year, you don't have to redeem a code for them. They're actually printed on the box.
Kellogg's cereal boxes have coupons on them for $10 off a $25 purchase of any Hasbro product, excluding video games, Winning Moves (whatever that is...), USAopoly, and Funrise products. So go buy some Froot Loops and get a nice pony discount!
EDIT: It seems this is a Canadian offer, and it probably doesn't apply to sale-priced items. I should read the fine print first.
Still, pony discount!