Peewee in Have Spacesuit, Will Travel was dear to me, as was Podkayne (though I'm hesitant to reread for fear of what I'll find over and above the rant at the end where the uncle blames Poddy's condition and Charles' sociopathy on the mom's insistence on working). As is often the case, Heinlein's agenda clashed with his storytelling.

I downloaded the Stross for later airplane reading.