Yakima in gonryun is a multi-hat master: in a single talk he can craft several rare headgears for you. The idea is simple: pick the item you want from the menu, learn its material list, then bring everything at once. This is a uaRO custom quest with no level requirement and no zeny cost — you pay only in ingredients, so the workshop is really a trade of rare drops for a finished hat. You can make as many items as you can gather materials for.
Yakima in gonryun (187, 140) and pick one of five items from the menu: 
Bird Nest, 
Lion Mask, 
Skeleton Manteau, 
Fashion Hip Sack or 
Sales Banner.Yakima will tell you the exact material list for your choice — note it down, since every hat has its own set.Bird Nest: bring 1 
Sombrero, 920 
Feather of Birds and 310 
Bill of Birds.Lion Mask: bring 1 
Tiger Mask, 10 
Tiger's Footskin, 30 
Tiger Skin and 300 
Tiger Panty.Skeleton Manteau: bring 10 
Old Manteau, 3 
Skull Ring, 2 
Manteau [1] and 1 
Ragamuffin Manteau. Fashion Hip Sack (Merchant class only, grants +2 STR): 3 
Romantic Flower, 3 
Fancy Flower, 2 
Flower Ring and 3 
Pirate Bandana.Sales Banner: bring 1 
Scarlet Dyestuff, 1 
Orange Dyestuff, 2 
Stop Post, 3 
Clown Nose, 180 
Fig Leaf and 20 
Solid Peach.Yakima, pick the same item and confirm "Yeah" — he takes the materials and hands over the finished hat at once. If something is missing, he will ask you to bring the rest.