In Hawaii, they used to pattern design the cloth they made thats called "Tapa".

So, google for:

Tapa Designs

Also, the tongan and samoan tattoos are very destinctive patterns. Leave the word "tattoo" out of the search:

Tongan designs =......http://tongan_tattoo.tripod.com/TonganTattoo/id5.html

Samoan designs

Sorry, I dont have anything specific to set as a reference.