Believe me, Jochen... you
really don't want to try collecting
ALL of the Spanish eggs!
I think their contents are as hard (or maybe harder) to catalogue than keychains. Many of them seem to be made of weird left over parts (probably excess factory stock), some of which don't even look like they belong together... although I have to admit, every once in a while there is a real treasure to be found amongst them... like an unseen before
female astronaut, for example. You might have to buy several hundred eggs before you find one though.
As hoppatussa and Meg already noted, the real trouble is if you buy these eggs sealed, you have no way of knowing exactly what is inside, and the colour of the shell does not give much clue... hence the name "Sorpresa".
Also I think they've stopped producing these eggs now, so it's probably more difficult to get them in mint condition at a reasonable price these days.
Thanks for posting your detailed list, Meg (and also Socrates, for the additional info on the 2006 range). I'm sure this will be very useful to all the Playmobil Egg collectors on the forum.