I had forgotten all about Kinder Eggs until a recent trip to Italy where after a meal the waitress bought my son a Kinder Egg over on a small plate, his face was a picture has he had never seen one before and coupled with the fact that he only has chocolate as a very rare treat he knew he was in for a treat.
We peeled off the foil wrapper and spilt the thin chocolate egg in two to reveal a yellow plastic egg that is opened by flipping the lid, so it all stays together. The last time I had a Kinder egg the yellow plastic egg came apart into two pieces. Inside the egg was an elephant, which is part of the WWF range of Kinder eggs.

My son enjoyed eating the chocolate, which is not as sweet as other brands and he really enjoyed playing with the elephant, so it was a nice surprise all round. The ingredients of the egg are as follows:
Fine milk chocolate 47% (sugar, whole milk powder, cocoa butter, cocoa mass, emulsifier: lecithins (soya); vanillin), skimmed milk powder, sugar, vegetable fat, concentrated butter, emulsifier: lecithins (soya), vanillin. Total milk solids 32% - Total cocoa solids: 15%.

Kinder Eggs have lots of different toys in, some you can make, such as cars and planes, others are solid toys, such as the WWF range, I remember that there were smurfs to collect when I was a child.
I saw in my local shop that Kinder Eggs retail for 69p, so not a cheap chocolate treat, but as long as the toys is good, they are probably worth buying on occasion. They are not suitable for children under the age of 3 due to potential small parts.
Overall I would recommend Kinder eggs to others, as they taste good, have a little surprise toy and they made my son very happy!