too late
I'm pretty sure a ton of ICT money is already being spent on iPads for kids. If these are already in the estate the beeb would be better off building a html5 app optimised for touch at minimal expense. If they must invest in hardware then those programmable Lego toys would be both fun and informative, and a special range could be brought out in line with BBC programming. Schools compete for some kind of prize. E.g. life size daleks...
Anyway, I think someone needs to track down Stallman and put him in charge of ICT...