As far as I could tell, the wall climb glitch doesn't work after the fork. Now for the skull elevator, you have to have the fork to get them over there, I think...hmmm, something else to try to do tomorrow...muhahaha
Also, the bones sometimes get stuck in mid air for a little while, or stuck in weird places. lol
My favorite is the dancing bones glitch. Play with the bones enough and you can get them stuck inside each other and they start vibrating and dancing around all by themselves. I'd call this a feature! ha ha