I Think it'd be really cool to have a basketball, This is really hard to explain, but have it only the size of a 2x2 and make it an item, so you can "thow" (Drop) it upward, into the hoop. I really don't think this would be hard to do asll you have to do is make it an item that you can thow, not any animations!
[EDIT:] Here's a pic of what it need to fit through.