Maybe boys that age are into trucks...cars...train sets...legos? I'm not sure but I believe cars are favorites of young boys. Gift cards would probably be a good idea that way they can pick out their own stuff (or their mother can pick it out)

I would love to help but unfortunately can't as we are having our own troubles trying to get Nathan something from Santa as well. But maybe you could PM me the address and the people that are helping us out might like to help them out too.