JoBro Tee shirt ideas?

So this summer me and my friendd are going to The Jonas Brothers World Tour 2009 concert. We want to make homemade tee-shirts.. well homemade tank tops out of that fabric paint that u can squeeze out. and also out of fabric paper so we cann addd photos. But we dont know what else to put on themm. We need unique, cute, kool ideas. Thanxxxx(: Remember be creativeee.(: