Geography Project . PLZ HELP!?X?

[Wekii G]

basically i'm designing an island in safari andd i need to know what I Can use thats sunstanable??!!
please help me .x

[t l]

paper mache, tooth picks, paint, maybe some chicken wirewood plank....

wood plank as the surfare. paper mache (mix 2 parts flour with 1 part water, and use as glue to form land from shards of news paper - did that make sense?), let dry until hard, paint accordingly. incorporae some real rocks or something too.