I've been thinking it might be nice to have a wand with one gold tip and one silver tip, a positive end and a negative end, for productions and vanishes, respectively.
If used for close-up, the wood should have an obvious grain, to suggest channels for energy.
Of course such a powerful object should be treated with care and caution, maybe stored in a wooden box with sigils on it and wrapped in a dark purple silk, similar to tarot decks.
Of course jokes could be made about having to be careful not to accidentally touch oneself with either end, especially the negative one.
Or if allowing a spectator assistant to wield the wand, to tell them something like: "Don't worry -- it's only certain thoughts that activate the wand. The important thing is never to think 'dragon's breh...' -- er, just keep a clear head, for both our sakes."