Yeah, I wonder if there are good luck symbols used today? I never seem to see any around but that doesn't mean they don't exist.
In mid-December, we kicked around the swastika-fylfot terminology and significance. I finally found a postcard (from 1909) that illustrates the swastika as a symbol of luck and friendship, a "greeting" card of a common type, an inexpensive remembrance with glitter and fake gemstones for one's favorite relatives (1c-2c for the card, 1c postage).