Cabin Decorating. Stressed!!?

3 friends and i are going to a camp the first week in August. We are there for 4 nights, and 5 days. itheres this cabin decorating contest, and its my first year, and i really really wanna win! My friends have been there before, and theyve told me to bring balloons and streamers, but i wanna know if theres more we could do! Im only bringin a laundry bag, and a duffell bag. Help would be awesoome, asap! Shanks in advance!!:))