Here are some tips and tricks!
- Use aquarium pumps to add bubbles to a container or prop (beaker).
 - Use shredded paper towels soaked in red food coloring for bloody flesh to stuff into body parts for a good effect.
 - Use corn syrup and red food coloring for blood effect.
 - Make sure if wearing stage makeup, powder you face afterwards to set the makeup.  This will soak up the grease and cause it not to smear.
 - Fill a non-powdered latex glove with water, and freeze it. Then when it is frozen, cut away the glove and use it for a float in your punch bowl. (You can use red Kool-Aid for a bloody hand effect.)
 - For a glowing toilet, take some glow sticks and tape them under the rim. This is kind of gross, but a great effect.