I used to use super fine miliput religiously. It's good stuff but it's hard to find here. I like the density, and that it cures really hard, but with enough playtime to do a decent amount at a time. I bought a batch of greenstuff a while back, I still have a lot left. It's much different. It acts like chewing gum, which is advantageous in some ways. I found it's good for sculpting hair.
We have Kinder Eggs but one half is toy, the other candy. We Americans don't like inedible objects stuck inside our food. Especially when it's marketed for small children.