Hehe, Hi floofie, As a Item maker, I know that the yellow boxes really don't count. Well, as in my experience. You cannot jump on them? It's easy. Go to all the items, by clicking on every seperate item. THEN, Press the second tab, while having them active with that little white square around them. Once on the second tab, Press the box where it says: Own Collision. IT MUST BE CHECKED IF YOU WANT TO JUMP ON THE ITEM. There is NO Other way to make the whole thing Collisioned. Lame? I knowright <-<