TOM trunk for me. It may not be the most mechanically advanced (like POTC ship) or the most sound (easy to chip and the optos can fail) but from a concept perspective it's great!
It has multiple states, each affect the ball differently. It can be used as a standard bash toy OR can capture the ball in 2 different ways. It fits the theme perfectly (a magician's trick trunk of secrets!) and doesn't take up all that much space on the PF, all things considered.