Awesome cereal collection!
I've been searching for the South African Kellogg's Frootloops MIMP box (which was very similar to the Frosties one if I remember correctly), and monsters, which were some of series 2 with a couple of series 1 thrown in. But I doubt it'll ever crop up. Us Saffas aren't known for hanging onto things like that, sadly. Those were the first I'd ever seen of series 2, and was blown away by the new neon colours of orange, blue, purple, and green, as the original series 1 in SA had neon reds and yellows. Series 2 is by far my favourite of all the MIMPs.
I do have the cereal box for the MIMP Sports Stars, as well as (I think) all of those MIMPs sealed; one of them is a black blind bag containing four of them, and I believe one of them is Tony the Tiger, the only one I don't have in a see-through sealed bag.