The Aaron and Jessie Chronicles: Immense Puzzle CONTEST

I have writer's block right now and can't think of ANYTHING for my story.Therefore,I am having a contest to see who has the best idea!Please don't get Aaron and Jessie together yet.Yes I know they;re really Phineas and Isabella.Yes I know there are a LOT of Phinabella shippers here.But Aaron and Jessie are 12 in this story.Anyways,write away