Need good way to grind emeralds

I need a good way to grind for emerald in the quickest possible way. It dosent have to be insane fast, just sorta fast. I would rather something that dosent need an expensive build because thats what im saving up for, and i am late game and have completed all the quests in the game. just need some ideas

 

If you want something that doesn't need a build, Outer Void

 

erm ACKSHUALLY
-the outer void requires a build b/c if there WASNT A BUILD
built by
the most dead
icated bui ld teem evr mde
u wld jst
bottom text
just FALL IN T VD
BC NO BUILD IS NO BLX
stpd dspg

 

If you want Outer Void to be usable you have to grind trinkets for hours so you should do raids cuz you can do those in morph and even if its grootslang you get 1 le per raid