Any ideas for a Christian grad theme?

Question:

Any ideas for a Christian grad theme?

At my mk (missionary kid) High School here in Papua New Guinea, graduations have themes. Our senior class decorates the gym with that theme, which is where we have the ceremony.
Well, I'm looking for some ideas. preferably with a Christian theme or base focus. One example was a year with a "footprints in the sand" theme. It was decorated like a beach and the seniors went down the center barefooted. Anyway, I would very much appreciate any ideas. :D

Best Answer - Chosen by Asker:

anything to do with fish, fishing, and the sea. "Come and I will make you fishers of men."

or a heaven theme. all white and glorious. wear angelic costumes? hire a really good choir to sing.