At this point there's nothing else to do except to go for rare items With 
Treasure Hunt on the odds of a rare item dropping from any particular enemy is 
08% so you have a bit of a time-sink ahead of you The main rare items that 
most people are going to want to go after are the tails so let's discuss those 
first

There are several different tails you can collect from random enemies and trade 
to the Tail Collector back on Earth for incredibly good gear Remember that the 
Tail Collector lives in a little cave accessible from Mythril via the 
hovercraft Below is a list of the tails you can collect what you get in 
return and where best to farm for them

*Black Tail -> Onion Armor
Drops from Armored Fiends Use a Siren on B2-B3 of Bahamut's Cave Try to Steal 
a Rune Axe during this process if you want

*Blue Tail -> Onion Shield
Drops from Thunder Dragons Use a Siren on B2-B3 of the Path of the Eidolons

*Green Tail -> Onion Helm
Drops from Green Dragons Use a Siren by the Sealed Cave entrance

*Pink Tail -> Adamant Armor
Drops from Flan Princesses Use a Siren in the B5 Lunar Subterrane southeast 
room (which had a Red Fang in the chest) The easiest way to quickly defeat 
these is to have Cecil using Draw Attacks and Counter Set his first ability to 
use Stardust The fight should be over after 3 Stardust Counters

*Red Tail -> Onion Sword
Drops from Red Dragons Use a Siren on B8-B10 of the Lunar Subterrane Remember 
that Berserk and Hold both work on these mobs You can also try for Crystal 
Rings at the same time which is a rare Steal from these

*Yellow Tail -> Onion Gloves
Drops from Yellow Dragons Use a Siren by the Path of the Eidolons entrance

These items all carry through onto New Game+ so they are worth obtaining in 
you are going to do New Game+

The next items that collectors are likely to want are the special Summons for 
Rydia These also carry over to New Game+ Here's a list of those and the 
easiest way to obtain them (remember to just have Cecil equipped with 
Kick/Counter/Draw Attacks to quickly end battles)

*Bomb
Drops from Balloons and Dark Grenades There is nowhere in the game to use 
Sirens to force these fights Just go to the easternmost Lunar Path as if 
you're heading to the final area and pray for good luck

*Cockatrice
Drops from Helldivers Cockatrices and Fledgling Rukhs There is nowhere in 
the game to use Sirens to repeatedly force these fights (you can summon them 
but they aren't the only option) Fight outside of Mysidia and you'll 
frequently encounter Cockatrices You can use Sirens to speed up encounter 
rates

*Goblin
Drops from Goblins and Lil Murders Use a Siren in the Mist Cave

*Mindflayer
Drops from Mindflayers Use a Siren in the passageway on B3 of the Lodestone 
Cavern

The next items you'll want (that also carry over to New Game+) are the max 
HP/MP up items Here's the easiest way to get a large supply of these

*Silver Apple
Use a Siren on either of the top two floors of Mt Ordeals to encounter Lilith 
She'll die quickly and has a 24% chance (with Treasure Hunt) to drop one She 
also drops Lilith Rod with a 10% chance if you want one

*Soma Drop
Use a Siren on the first floor of the Lair of the Father to encounter Dark 
Sages These have a 10% chance (with Treasure Hunt) to drop these They also 
drop Ribbons with a 08% chance

These are the main items you'll want as they carry over to subsequent 
playthroughs There are other nice items you might want to get see the item 
lists at the end of the guide to see what you're missing then consult the 
bestiary for where to get the drop/steal of the items you might want Be aware 
that aside from the items listed above and the Dark Matter you'll be stealing 
from Zeromus no other normal items (excluding Augments) carry over to New 
Game+ Also if the HP/MP boosting items are used those effects do not carry 
over to New Game+ so don't use them if you don't have to