Good song to sing at church camp?

My church always goes to the same Youth Camp every year, but this year is the very last year they are having this certain camp, so we want to do something special. We want to have an acoustic band there playing during our free time. But they put me in charge of finding music. And that wouldn't be a hard thing to do, if I didn't;t have to find music that fit keyboards, guitar, djembe, and a saxophone. Do you have any idea what songs we should play? The saxophone really doesn't have to have a certain part. I'm sure we can just get him some solo music, but I would still like y'alls opinion. Thank you so much (: