Clinton did a quick tune up on my car last weekend, new plugs and a belt. Landon, of course wanted to help. So I set him up with a nut driver and 3 screws halfway screwed into a piece of wood. [Full disclosure: I screwed them all the way in and then half way back out, so he could either screw them back in or out and it would be just as easy.] He worked on that for quite a while, and he did actually manage to free 2 of the three screws.