The four costume codes (which do not come right back off!):
411 - Brain hat
911 - Police costume
1225 - Santa's Elf costume with bag
1337 - Nerd look (Ned Noodlehead)
The three traders are all at Nabooti, where you first arrive on the island.
1.411=brain head 2=will be a police boy/girl 3.1225=you get a santa bag and hat 4.1337=nerd
you have to give up all you're credit in the store
you have to find all of the jems!
Nabooti Island is set in Africa. Except for the fictional town of Nabooti, all of the locations are real places in Africa.
In all the island except nabootie
Take them back to the Museum and put them back in the Nabooti totem. (see related question)
Collect all five jewels, then take them to the totem at the museum in Nabooti. (see related questions)
All of the traders are in Nabooti. Get the gold nugget from the Kaya Forests (in the top of a palm tree).
After you recover all 5 of the missing Nabooti Jewels (see related question), take them back to the Nabooti museum and put them back into the totem statue -- purple, green, red, white, blue. You will receive the island medallion.
You must recover all five of the Nabooti jewels, and return them to the Nabooti totem in the museum. (The order, from the top, is purple, green, red, white and blue.)
To get the map, accept the quest at the Museum, to recover the lost Nabooti jewels. You can see the maps by clicking on the map list (upper right). It is always visible when you're flying on Nabooti Island. The continent of Africa is where all of the locations are shown.