*squee* So cute! Just out of curiosity I'm certainly not scrambling for my crochet hooks what kind of yarn are you using? It looks much thinner than what I can usually get at the craft store.
It's cotton yarn (category 2 'fine'; mostly Catania by Schachenmayr). Emil's shiney hair is cotton-viscose (Drops), Lalli's is a bamboo yarn - it is so soft, you feel the urge to pet him
As for the hook, I use a 2,5 mm one for most of the body.
They are 14-15 cm tall. Unfortunately they can't stand on their own feet; I need to use pins and other tricks for the photos.
And hey, you
should grab those crochet hooks and make something. It's fun!