Something I've used on occasion - if there are candles on the table, arrange for them to be unlit. Then, with a quick "excuse me", light the candle with a match from a matchbook, silently but dramatically shove it into your fist, execute vanish (I'm starting to sound like Brian Tudor!), and reveal an empty, unburnt hand with a smile as you say, "Ladies and gentlemen, I'll be your magician this evening..."
Really, the 11p trick is a very good opener, I use a similar effect, just with a total vanish rather than a jumbo load for a finish. I'd also agree with Bronz - Red Hot Mama/Chicago Opener really knocks them between the eyes and lets them know you know your stuff, unfortunately for you it's cards. (Although I also see the benefit of not starting with a card trick... I tend to go into card stuff with John Archer's line, "it's in the magician's code that every act should include a card trick... otherwise magic will become popular again and everyone will be doing it..."

)