Lemony Snicket: A Series Of Unfortunate Events Q&A

How do you find the items to make the Reptile Retriever?

I'm at the part where you have to pull the lever but I can't find the last piece for the invention I found the spring and the scale and gavel but I can't find the string looking thing Help!!!!

I can't get cookbook, and I get locked in library at the bottom of an elevator. How do I get out?

Uggg!!!! I'm at the part where Violet just drained the area with all the leeches and you play Klaus and he is at the area with the little blook and the drain! What do you do next??? :(..

im tryin to make the reptile retriever.but cannot find the last item [the barrel ] please help im going mad.