Drug Rehabilitation that works

Downey Jr wanted to punch co-star
Robert Downey Jr has admitted a love-hate relationship with co-star Zach Galifianakis.
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‘Tim’s Story’ of drug addiction: a wake-up call for students and parents
The tragic death of a young man due to drug addiction, as told by his father, served as a “wake-up call” to Rose Tree Media School District parents attending a special presentation at Penncrest High School recently — and to Penncrest students who were riveted by the same powerful message delivered the next day at a school assembly.
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I’m going to a Yule Ball (yes, the Harry Potter thing) at our local library, and have been asked to bring the punch. I want to make a sherbet punch for it. It has to be non-alcoholic, of course, and looking festive would be a plus. Any ideas?
Please be precise about the amounts of ingredients needed. I need to know what to purchase.

I am looking for some new recipes for some delicious and pretty alcoholic party punches to serve for one of my upcoming summer parties. Do you have a favorite or a favorite resource? Links are fine, as long as they work. Thank you in advance for all of your answers!