Mirror Optical Illusion Prank that involves identical bathrooms and twins

A false piercing pen and DVD explaining its use to create the illusion trick of a pen penetrating a bill. Price: $19.95 or less

Place an object under the mirage bowl and it creates the illusion of that object in a much smaller scale and floating on top of the bowl as a holograph. Interesting and decorative.
Price: $39

Optical illusion kit with Scientific approach to perception of illusions. Kit includes detailed manual and optics contraptionsPrice: $69.99