Tricks with sponge balls, rabbits, bananas, etc. represent a type of magic distinctly its own. The fact that they have a fairly solid look to the average person but in actuality are amazingly compressible makes them ideal for manipulation by the magician. The truly wonderful thing about sponge effects is that many of these effects happen in the spectator’s own hands. And magic that happens in the spectator’s own hands is, without a doubt, the most powerful type of magic.