Paint the room in a bright color that evokes the sensation of being in the tropics, such as a lime green to match tropical foliage or a sky blue to remind you of the ocean.
Furnish your room with bamboo wherever you can. Bamboo furnishings have a hand-made look to them. Bamboo chairs, tables and wardrobes are just a few examples of furniture you can find in this style.
Decorate the room with tiki-inspired foliage; adorn a tabletop with silk plumeria blooms or drape silk plumeria strands from the ceiling and light fixtures to bring the natural allure of Hawaii into your room.
Use fruit in your decor, like a centerpiece of fresh island fruit such as pineapple. Party supply stores also offer tiki and island-inspired decor, like coconut shells that have been turned into candles.
Place a few tiki idols, both large and small, throughout the room to emphasize the theme. Accent them with natural beach decor, like jars of sand or scattered seashells.