Buying Buying Tradeable Junk / Misc Items & Their Location That I Don't Know About!

Hi, I enjoy collecting misc and junk items. There's still quite a few I don't know about and the Wiki doesn't really help much, so I'm offering 16-32 EB for 1 junk / misc item and their location!

The misc / junk items I know about are:

Dark Aura
Firefly Wing
Dynamite
Rubble
Rock Pile
Frost Chunk
Metal Scrap
Raw Fish

 

String, occasionally obtained in CIP and they tend to turn into an ingredient after some moment for some reason.
I remember you can get Seeds from a cave in swamp.
Quest [Cook Assistant], you are required to buy misc item "Milk", you can still get back to those merchants later. They are located near [-810 -1920]
I think there are some more junk/misc item in swamp/dark/kander. I've gotten other junk/misc items around but I'm uncertain where to get them.