At a very basic level, you could use the cards to ask for radiant health during this season: Meadow (Garden) (associated in this system with this turn of the Wheel), Oak (Tree), Sun.
Getting a bit more specific, I chose these cards to represent children's runny (flowing) noses clearing up quickly :)
|Boy, Fish, Fox, Birch Rods, Clover|
You could also keep it tighter and just have these cards to represent children's ear/nose/throat infections being small or soon over...
|Boy, Fox, Clover|
Of course, a spell is not the only thing I'd do. As the saying goes, heaven helps those who help themselves. So, adding some eucalyptus or olbas oil to an oil burner to accompany the spell would be no bad idea. Or teaching your kids to use a neti pot (if they're old enough - can't wait for that discussion in our house!) Giving them probiotics and herbal remedies to boost their immune system, too: such as Cat's Claw (we give them this as a tea), Goldenseal, Echinacea, Schisandra. And have some yourself, while you're at it. After all, the thing kids love to share most is their infections!
Wishing you all a healthy autumn, and just to say that next week's post will go live on Sunday 20th September, as part of the Mabon Tarot Blog Hop.