I have a wonderful little boy who is turning 2 yrs old and am not sure what to get him. Since he was a baby he has adored gadget type things and likes seeing how things work. He has always loved the toy where you press a button or turn a key and a different door opens and an animal pops up, he loves to mess with screws and screw drivers, light switches, turning door knobs to watch the latch go in and out, even at the park we saw an old fasioned water pump and he just about had a fit trying to get to it and examine how it worked.

He has been like this since he could crawl he wasnt an early talker or walker or really in to numbers or letters early like some of his siblings. I dont know if hes gifted or not but im stumped on what to buy him for his 2nd birthday.
He already has all his brothers old dinos and cars and such which he loves also. He has no interest in the baby/toddler toys i bought him for christmas.
He likes the kids electronic games and plays well on his 3yr old sisters leapster explorer so i might get him one of those but i really want to find something that will help fill his love of gadgets...

Any help is much much appreciated!!!!