If you want your guests to feel like they've landed on a tropical island, give them a flower lei garland as soon as they enter. It looks like so much colorful fun and will get anyone in the Tiki mindset. 

You can buy leis from your local party shop or from Amazon; they are not always the best quality (which is why they are not part of the Maitiki boxes) but they will add an extra fun element to your shindig and create that tropical ambiance. So let everyone get lei'd and have a blast! ;)