Put the bride and guests at ease with a tranquil, tropical ambiance. If the bridal shower space has a waterfall, you're in luck. If it doesn't, add a tabletop waterfall to the decor. Big or small, decorate the waterfall with ferns and orchids. Find Hawaiian-theme tablecloths, napkins and such in tiki, floral and beach patterns -- floral is a natural for a bridal shower. Use a hammock to collect gifts. Decorate the entire venue with tropical greenery and Hawaiian-native flowers such as hibiscus, pink cottage roses and plumeria. Bring the Hawaiian beach to the bridal shower with a decorative fish net and shells from a craft or party store. If the shower will last into the evening and is outdoors, inexpensive tiki torches are a must.