When I was little, I learned to wish upon an eyelash. Basically, like this - if you drop an eyelash on your cheek, you can make a wish and blow away the eyelash. If it flies away, your wish will come true. (Don't try this with mascara heavy lashes, they never fly away and you'll feel like no one wants to grant your wishes.)
I taught my kids the same thing, so when one of their extremely long and curvy eyelashes fall to their cheeks, I hold it out to them, and watch them close their eyes and mumble a silent wish. It used to take them forever to think of a wish, but now their mouths start moving in silent prayer as soon as they close their eyes. I've told them they can't tell what they wish for, but I can easily read their lips - "I wish mum will get well again".
I still wish upon my own lashes, even though it's silly and childish (I mean honestly - so am I). But I can't think of a wish so quickly. What would be the point of wishing to get well, or live for ages, if something would happen to the boys? As I found out about the cancer, I mourned that I wouldn't get to be an old lady, and ever since then, as my body deteriorates and my joints ache, as I'm going through menopause and deal with less strength and energy - as I'm basically feeling and looking like a little old lady - I've thought to myself that I should be more careful what I wish for. So these days, I close my eyes and I wish for my kids to be happy and healthy. I wish that they will know how loved they are.