Guilder
03-08-2019

Equipment with this effect:

Wanderer's Wear (R8)
Vagrant's Wear (R8)
"Seal Stuffed Doll" / アザラシのぬいぐるみ(R6)
Stuffed Dolphin (R6) "Dolphin Stuffed Doll" / イルカのぬいぐるみ
Prince Henrique's Clothes (R5) "Enrique clothes" / エンリケの服
Josephine's Clothes (R5) "Jose clothes" / ジョゼの服
※ (R5) "Alchemist's jacket (ground)" / 錬金術士のジャケット(地)
※ (R5) "Costume of alchemist (ground)" / 錬金術士の衣装(地)
Divider EX (R5)
Riding Suit (R5)
"Bloomer Foos (feet) (Wind)" / ブルーメフース(足)(風)(R5)
"Sternoon Foise (leg) (Wind)" / シュテルンフース(足)(風)(R5)
Millionaire Suit (R4)
Candy Staff (R3)

Note: unofficial google translations shown in quote marks with original JP name for those who wish to research them. Also, some items may or may not be currently/ever available on Maris server. Hope this helps. Cheers, and great online voyaging to you.

Source: gvo.gamedb.info/wiki/?Skill/Product/Alchemy/ItemBoost

Guilder
05-22-2019

Updated link to the "Seal Stuffed Toy":

Stuffed Seal (R6)

Guilder
03-17-2020

Sea Monster's Hood (R4)

Guilder
06-08-2020

Stuffed Killer Whale (R6)

Guilder
09-15-2020

Shoes: Sea Monster's Boots (R5)

Clothing: China Clothes (male) / China Dress (female) - both R5

Guilder
12-07-2020

Future Content: Sea Dragon Greaves (R5) - Candia Production Version
(I will add the appropriate article link when possible.)

Guilder
01-02-2021

Clothing: Treasure Hunter's Clothes (male) / Treasure Hunter's Clothes (female) - both R5

Beomi
11-18-2022

Accessory: Brave Pendant (8R)

CA-RvZ
12-23-2023

Snowman (R6)

CA-RvZ
03-07-2024

Stuffed Crocodile (R6)

benjy20
03-18-2024

this skill works in battle? o. o

Guilder
03-18-2024

Certain battle-oriented players have told me all speedups (wind charm and EX) do not apply inside of battle ring. I am inclined to trust their feedback but never tested it for myself. Make of that what you will. Cheers.

Benjy
06-03-2024

※ (R8)

Benjy
08-04-2024

Steam Engineer's Work Suit (R7)

Benjy
10-05-2024

Uchiwa (R6)

Guilder
10-25-2024

Geologist's Shoes:
Navigation +2 / Sail Handling +3 / Rowing +2
Increase Sailing Speed [R8]

Source: uwo.papayaplay.com/uwo.do?tp=news.view&postid=5304