Nuria! Absolutely! ColaCao for desayuno, and I prefer galletas Tosta Rica...
The last time I did any serious breakfast shopping I found (in general availability), Cocoa Krispies, Rice Krispies, Sugar Smacks, Corn Flakes, Frosted Flakes, Pops and a couple of nasty versions of Müesli (and assorted other types).
Note: The names are a bit different, as well as some of the mascots (Choco Krispies has a monkey named Miko), but the box colors are the same and the cereal tastes the same.
If you're anything like me, cereal is the way to go...but when in Spain, do as the Spaniards (Nuria) do...ColaCao!!!