Sometimes, you may observe people dipping their pinkies into the wine and brushing their wine-stained fingers against their eyebrows (to express their appreciation of the mitzvah) or even shoving them into their pockets (expressing their wish for a successful week). Others may pick up the extinguished candle and give it a sniff (expressing their wish for improved memory for Torah study). These are among the interesting customs that have arisen around this ceremony—and there are many more. If you wonder about something you see, just ask.