You could always buy a knob and bushing puller. http://luthierssupplies.com.au/produ...oducts_id=2730

I've got the very same one (though bought in the UK). I used it on my Gibson Les Paul when I changed the hardware over from gold to nickel and it worked very well, didn't leave a mark. For knobs, the butterfly nut should be OK, but for bushes you'll probably need to use some grips on it as well to get enough leverage.