WCIF thread now closed.

Hey @esfire I hope some of this works for you:

This post here has a dozen Sims 4 links fro dirty/grungy/ripped clothes (both lists are identical): http://modthesims.info/archive/index.php?t-561220.html

Tropical clothing:
http://mrph4sims.tumblr.com/tagged/downloads
http://mystufforigin.blogspot.pt/2015/09/glamor-choice.html
http://annettssims4welt.blogspot.com/2014/12/maxi-skirts-criss-cross.html
http://danysims3.blogspot.it/2015/03/ts4-piper-hippie-clothing.html
https://www.thesimsresource.com/downloads/details/category/sims4-clothing-male-teenadultelder-swimwear/title/s77-male-08/id/1365664/
http://alexandra-simblr.tumblr.com/post/101072637135/maxi-dress-collection-ts4

Misc Tropical:
http://sssvitlans.tumblr.com/tagged/s4tropical

Tropical flowers for hair:
http://sims3s.ru/accessory4-flower.php
http://jennisimsunanuevaexperiencia.blogspot.com.ar/2015/05/downloads-sims-4-accessory-crown-diadem.html#.VVkdtvl_Okp
https://kijiko-sims.tumblr.com/post/129472838487/thank-you-for-visiting-my-gallery-on-tumblr
http://jennisimsunanuevaexperiencia.blogspot.com.br/2015/04/downloads-sims-4-aloha-accessories.html#.VUR_Thg1GrV

Tribal face make-up (untick the x for the female category in cas and they should show up for males too):
https://www.thesimsresource.com/downloads/details/category/sims4-makeup-female-blush/title/%5Bts4%5Dtaty_tribalblush_03/id/1259349/
https://www.thesimsresource.com/members/tatygagg/downloads/details/category/sims4-makeup-female-costumemakeup/title/%5Bts4%5Dtaty_tribalface_08_facepainting/id/1362318/
https://www.thesimsresource.com/members/tatygagg/downloads/details/category/sims4-makeup-female-eyeshadow/title/%5Bts4%5Dtaty_tribalface_07/id/1352757/
https://www.thesimsresource.com/members/tatygagg/downloads/details/category/sims4-makeup-female-eyeshadow/title/%5Bts4%5Dtaty_tribalface_06/id/1340100/
https://www.thesimsresource.com/members/tatygagg/downloads/details/category/sims4-makeup-female-eyeshadow/title/%5Bts4%5Dtaty_tribalface_05/id/1340098/
https://www.thesimsresource.com/members/tatygagg/downloads/details/category/sims4-makeup-female-eyeshadow/title/%5Bts4%5Dtaty_tribalface_03/id/1333105/

Messy up-do hair:
https://www.thesimsresource.com/downloads/details/category/sims4-hair-hairstyles-female/title/sintiklia--hair-s14-zoella/id/1294540/
http://missparaply.tumblr.com/post/141324621306/ts4-maysims-48-solids-64-colors-custom
https://www.thesimsresource.com/downloads/details/category/sims4-hair-hairstyles-female/title/anto--blossom-%28hair%29/id/1365466/

Ponytail:
http://sssvitlans.tumblr.com/post/158210414385/chocooosims-hey-its-really-a-simple-hair-its
http://sims4customcontent.tumblr.com/post/134728999008/gohliad-quick-pony-maxis-match-hair-for
http://simlaughlove.tumblr.com/post/137839591273/sll-simpleponytail
http://simlaughlove.tumblr.com/post/147305191393/sll-playfulbraids

I'm sorry, I'm not really sure what you want. I don't know what you mean by tribal. When you say castaway, i think stranded on a desert isle. If you want something else let me know!