So far I have gotten an acoustic guitar, a marble run, laminated animal map of the world and Ralph S. Mouse books for ds1 (he'll be 5 in Jan).
I'm going to try and find some dress-up clothes to add to his box, too.
Off the top of my head..he has expressed interest in a drum set, ant farm/bug habitat type thing, microscope, various trucks and firestation lego set.
I'll be looking for more ideas, since I have a birthday and Christmas to think about.
Marie-Mom to two boys and a girl.