for rafael, i think playing with real cooking, as simple as making strawberry jelly, can kill more time than toy kitchen : P
step 1: cutting strawberry into pieces - at least 20 mins (yet you have to tolerate the juice spilled around the place...)
remarks: if 20 mins is not long enough, ask him to cut it into very small pieces. it will surely double the time...
step 2: stir the jelly mixture - 5 mins (again, you have to tolerate the sticky mixture spilled on your sofa, floor, table... and everywhere!)
step 3: put the mixture and the strawberry into glasses - 10 mins
remarks: you can also learn who rafael likes the most - usually the beloved one will have the largest portion... oh we finally came to know that rafael likes himself the most : P
step 4: tasting - 3 to 5 mins (depends on the size of his spoon)
step 5: evaluation - 1 min (obviously the strawberry is too sour for rafa : P)
p.s. yeah... it also helps kill your own time as it takes more than double the time that used to make jelly to clean up the aftermath...