Using the new boss modes to make spina

Bosses that are fantastic to farm, (Or bosses that I've happened to farm as of late to make spina)
Any other contributions are wonderful and I'll add any and all of them. These are just the methods I've been using, so feel free to write your own!

My methods include a lot of Easy mode farming, since material drops are selling insanely well right now due to the new blacksmith levels.

Boss Roga:

• Boss Roga's belt: 2k each, break Roga twice and then dps him down for an almost guaranteed belt drop, otherwise just kill him instantly and hope for the best
• Ore of another world: 3-6k each (Price is pretty wonky right now): Pretty random drop chance in my experience
• Broken Huge Mace: Pretty odd pricing on these, if someone could provide me with the price of a stack, that would be appreciated
• Fighting Roga on easy mode is the fastest way of farming these materials. You lose out on the possible crystal drop, but if you don't mind losing that, you can make a lot of spina just from the material drops if you need a lot of spina quickly.

Eerie Crystal:

• Nightmare or Ultimate mode
• Farm it on nightmare or ultimate for the higher chance for the crystal drop, it still dies fairly quickly
• Farm it on easy mode for Black Miasma, Turbid Crystal, and other materials

Masked Warrior:

• Farm for berserker masks (price unknown)
• Greatsword Fragments (3-4k each, requires 2 breaks. You'll need a party for this.)
• Orange Dye Armor (Not sure if it drops on easy mode, need confirmation)
• Easy mode, if you have a breaker, can get you a lot of spina with the greatsword fragments, with the bonus of the orange dye. You just need to be able to break twice, which requires at least two people in the party.

Forestia:

• Easy mode farming is nice at Forestia, he dies fairly quickly and drops:
• Rainbow Stone: Around 6k each, fantastic money
• Storm Daggers drop chance, requires break (Great subweapon stats)
• The rest of his drops are pretty bad for money making, Forestia isn't too great to be honest. The rainbow stones are what matter the most

Mauez:

• Easy mode farming isn't too bad here, Mauez is quite easy even on normal mode, so easy mode isn't really needed, but you can try it anyway
• Broken rods have a pretty strange pricing, they aren't too expensive though.
• Runestones. These are the bread and butter of Mauez, similar to Rainbow stones at Forestia, they're worth around 5k each and sell quite well.

Flare Volg:

• Easy mode farming at Flare Volg is, again, similar to Mauez and Forestia. You kind of rely upon one drop to make spina, or for the dyed armor drop.
• Red Armor Dye C
• Fiery gem (Pretty much the only expensive drop here)