The turn-in npc for everything listed in publish 53 will be behind the west Britain bank:
Holiday & Valentine Gifts*
50pts
Grobu’s Fur
100pts
SOS and MIBs
100pts
Powerscrolls 105
100pts
Treasure Map(Plainly, Expertly, and Adeptly Drawn)
100pts
Cleverly Drawn Treasure Map
200pts
Artifacts Level 1 and 2
200pts
SoS/MiB Pre-Chest Loot
250pts
Artifacts Level 3 and 4
500pts
Powerscrolls 110
500pts
Stats Scroll +5
500pts
Leviathan Minor Artifacts
500pts
Deviously Drawn Treasure Map
500pts
Paragon Minor Artifacts
500pts
Ingenious Map Minor Artifacts
500pts
Special Fishing Net
500pts
Artifacts Level 5
1,000pts
Powerscrolls 115
1,000pts
Stats Scroll +10
1,000pts
Ingeniously Drawn Treasure Map
2,000pts
Artifacts Level 6
2,000pts
Stats Scroll +15
2,000pts
Obsidian Blade
2,500pts
Chaos Shield (from Vanguard)
2,500pts
Artifact Level 7
3,500pts
Powerscrolls 120
3,500pts
Stats Scroll +20
3,500pts
Artifact Level 8
5,000pts
Fabled Fishing Net
5,000pts
Ancient SOS
5,000pts
Stats Scroll +25
7,500pts
Artifact Level 9
7,500pts
Artifacts Level 10 and 11
10,000pts
Major Tokuno Artifacts
10,000pts
Artifacts Level 12
25,000pts
Sea Horse and Ghost Anchor
25,000pts
The turn-in npc for the rat coins is in the east Britain bank as mentioned.
The turn-in npcs at the Britain castle accept various things listed in publish 52:
Onoe:
Planesword
100pts
Planeshield
100pts
Power Weapon
650pts
Magincia Rubble
800pts
Vanquishing Weapon
1.000pts
Mystic Weapon
2,000pts
Staff of Pyros
2,500pts
Vorpal Blade
2,500pts
Ophidian Weapon (Power)
3,500pts
Cursed Artifacts
5,000pts
Ophidian Weapon (Vanquishing)
5,000pts
Ophidian Weapon (Mystic)
7,500pts
Berserker's Scythe
10,000pts
Ophidian Berserker's Bardiche
25,000pts
Inavlis's Burchete
2,000,000pts
Calaid:
Ophidian Rations
Can accept stacks of 1, 10, or 100
100pts per Ration
Slippery Snake Skins
400pts
Makiko the Samurai
* Turnins:
o Ophidian Journals
o Ophidian Orders
* Zento, Rokuon Cultural Center, 1st Floor
*Holiday & Valentine Gifts:
* Snowglobes
* Snowflakes
* Holiday Cards
* Holiday Trees
* Poinsettia
* Holiday Tree Deeds
* Candy Cane
* Pile of Snow / Glacial Snow
* Holiday Bells
* Holiday Candles
* Holiday Statue
* Mistletoe
* Reindeers
* Snowman
* Holiday Wreath
* Holiday Timepiece
* Valentine Cards
* Rose in a Vase
* Red Velvet Box (NOTE: this is for the container ONLY. If you turn in a box with stuff in it you'll still only get 50 points.)