Well I was botting at MTA with RID and left it running when I went out for the night.
Got back home and I'm exited out all the way to the main Runescape website. I log back in and my account is in the middle of the building but the inventory is completely filled with items from the Alchemist arena. (eg. rune long swords, leather boots, adament med helms/kits, etc). None of which are tradeable or can be worn.
Usually when you log out/get disconnected all the items disappear.. I have no clue how it managed to keep them lol. Seems a bit pointless, but maybe someone can think of something useful or beneficial or whatnot?