here is a list of items that drop from chaos lamps

50x Hp Potion(Lv3)
50x MP Potion(Lv3)
50x Return Stone
Upgrade Core(Low)
Upgrade Core(Medium)
Upgrade Core(High)
Force Core(High)
Slot Extender(Low)
Slot Extender(Medium)
Slot Extender(High)
Map Part
Muster Card Ruina Station
Epaulette of the Dead
Epaulette of the Dead(B2F)
Plates of Honor
Astral Board - All types
Astral Bike RW-3
Plasma Coating Kit
Epaulette of Fighter/Sage/Guardian +6
Any Extract potions

Where do these drop from?

i found 7 of them so far (2 i sold) and from my experiences they ain't tied down to any monster or any realm for that matter but bloody ice is a good place to look i found 6 of them in bloody ice heres the monsters i got them from 2 off lynxhorns,2 off scorlugs,1 off a skeleton, and 1 off a nipperlug however i also 1 found in green despair on a bugzard NOTE: i still have to confirm his but i think the brown tent near the scorlug spawnpoint area is a good farming location for CLs i found 2 within 10 minutes around that area

FYI, CL drop rate is completely random and relatively low. The amount you get is just luck. Killing weaker monsters is a good idea. Helps speed up the hunting.

I get a lot of CL from Bloody Ice dungeon