Two "superstitions" I follow (as they cause no harm, and I like them) are from my French-Canadian grandmother's side, I think.

One is never to give a purse or bag as a gift without putting something in it - even just a penny. An empty purse will stay empty is the superstion, so you are giving bad luck and poverty.

The other is to always wear something new for Easter - some years it's just been a new barrette in my hair, but the belief is, if you don't wear something new for Easter, a little birdie will leave droppings on your head!

I;m not really superstitious, but I like those two! And, of course, like black cats just as much as any other color, enjoy Friday the 13th just fine, but, like Ann, don't walk under ladders just for safety - with my clumsiness, I'd probably know it down on my own head!