need ideas ..please help!

[wmDG27]

I just recently discovered this website while I was trying to get fun ideas for our upcoming bid day, we our having it outside at a park and i'm really excited about it but I want it to be perfect. I'm thinking of having a hawaiian them but i'm having trouble coming up w/ideas on how to make it happen.
Also the t-shirt we're thinking of using has nothing to do w/the theme.. is that bad?

Any help would be welcomed, thanks!
itb,
wmdg27